I'm making a list of all the best free tools out there. Help me grow the list and useful for others :). Feel free to contribute and add new tools. Just send a PR and I will add it.

• Analytics
• Authentication
• Email
• CRM
• Live Chat Software
• Calendar
• Design Tools
• Bug tracking
• Task Managment
• Landing Pages
• SEO
• Website Builder
• Social Media
• Teams & Collaboration
• Stock Photos
• Colors
• Stock Videos
• Marketing Tools

• Keen - Ship user-facing metrics in an afternoon, not months
• Fabric - A platform that helps your mobile team build better apps, understand your users, and grow your business.
• Mixpanel - User behavior analytics for product, marketing, and data teams.
• Segment - Use Segment to collect, clean, and control your customer data.
• Hotjar - See how visitors are really using your website, collect user feedback and turn more visitors into customers.
• Fathom Analytics - Simple, useful websites stats without tracking or storing personal data of your users.
• Countly - The best mobile analytics and marketing, web, desktop and IoT analytics platform for securely tracking customer journeys in your applications.
• Amplitude - Truly understand what makes your users tick, rapidly release better product experiences, and grow your business across web and mobile.
• Google Analytics - Get a deeper understanding of your customers. Google Analytics gives you the free tools you need to analyze data for your business in one place.
• Matomo - Formerly Piwik, Matomo is a free and open source web analytics application
• Inspectlet - Stop guessing what your visitors want. Google Analytics tells you what, Inspectlet tells you why.
• Clicky - Simply the best way to monitor, analyze, and react to your blog or web site's traffic in real time.
• Cyfe - Social media, analytics, marketing, sales, support, infrastructure... all in one place. Track your entire business in real-time.
• Quantcast Measure - Quantcast Measure provides deep, real-time insights about who your audience is, what motivates them, and how they spend time across your properties.
• Open Web Analytics - Open Source Web Analytics Framework

• MojoAuth - MojoAuth is a free passwordless authentication service that offers secure and easy logins for your users.

• MailChimp - Mailchimp is a marketing automation platform and an email marketing service.
• Mailjet - Email Delivery Service for Marketing & Developer Teams
• SendPulse - Automate your marketing and combine all delivery channels on one platform: email, web push notifications, SMS, Viber.
• Benchmark - Email Marketing Service to engage subscribers, nurture leads, send beautiful, responsive emails and track results.
• SendInBlue - All-in-one email marketing, SMS, transactional email (SMTP), and marketing automation platform.
• Zoho Campaigns - Zoho Campaigns is an email marketing software that helps businesses drive more sales.
• Mailerlite - Email Marketing & Automation for Small Businesses, Professional Bloggers and Authors
• VerticalResponse - VerticalResponse allows you to build custom lead capture forms and landing pages, and promote on social media all in one place.

• HubSpot CRM - HubSpot CRM makes it easy to organize, track, and grow your pipeline. Get deeper insights on every lead and monitor deals with ease. And it’s free. Forever.
• Freshsales - Freshsales is a full-fledged Sales CRM software for Business with lead scoring, built-in phone, email, activity capture and more.
• Workbooks.com - An affordable,feature-rich CRM solution that enables businesses to acquire, convert and retain customers
• Zoho CRM - Zoho offers sales CRM software to manage sales, marketing, improve customer relationships & more.
• Insightly - Insightly is CRM software for Gmail, G Suite and Outlook. Sign in and experience a cloud-based CRM platform built for lifelong customer relationships
• Cloze - The no-work way to see everything about your contacts in one place. Email, phone calls, meetings, notes, follow-ups and social.
• Streak - A customizable CRM inside Gmail

• Drift - Drift is a conversational marketing platform. With Drift you can turn your traffic into qualified meetings.
• Freshchat - Freshchat is a messaging software built for teams who want to ace customer conversations — marketing, sales, or support
• Chatra - Live chat software that helps to increase revenue and collect feedback providing an easy way for website owners to talk to visitors in real time.
• Chaport - Chaport is designed as a modern messenger to make your communication with customers as easy and enjoyable as chatting with friends
• Small Chat - Smallchat is an easy, flexible Slack Integration for chatting with visitors to your site.
• Customerly - The Live Chat software with Video Calls, Typing previews, Knowledgebase & Surveys.
• Crisp - Customer Messaging Platform for Startups & SMB's. Crisp provide Knowledge base, Team Inbox, Chatbot, CRM and multiple other features to let you build your own way to customer success.
• Helpcrunch - A customer communication platform to connect with your customers via in-product messenger, modern live chat or email.
• Twak - tawk.to is a free live chat app that lets you monitor and chat with visitors on your website or from a free customizable page

• Calendly - Schedule meetings without the back-and-forth emails.
• Any.do - An award-winning app used by millions of people to stay organized and get more done.
• Google Calendar - Free calendar app for personal use.
• Fantastical 2 - The Mac calendar app you'll enjoy using. Quickly create new events and reminders with natural language input and more.
• Meetingbird - Save time with the #1 scheduling platform. Meetingbird's simple interface and powerful integrations make scheduling meetings easy.

• Overflow - Turn your designs into playable user flow diagrams that tell a story.
• Wake - The fastest way for designers to share work with their team
• Figma - Design, prototype, and gather feedback all in one place with Figma.
• Xara Cloud - Create visual and engaging business and marketing documents that work in minutes - no design experience required.
• Sizzy - A tool for testing responsive websites on multiple devices at once
• Canva - Easily create beautiful designs + documents
• Zaplin - Handoff designs and styleguides with accurate specs, assets, code snippets—automatically.
• InVision - Prototyping and collaboration for design teams.
• Craft - A suite of plugins to let you design with real data in mind, by InVision.
• Crello - Easy to use design tool for creating stunning visuals.
• Sprout Social - Sprout Social Landscape is essentially an interactive tool for social media image resizing.
• DesignBold - Design a professional Facebook Cover, YouTube Channel Art, or Marketing Materials in no time.
• Vectr - Vectr is a free graphics software used to create vector graphics easily and intuitively. It's a simple yet powerful web and desktop cross-platform tool to bring your designs into reality.
• PixTeller - PixTeller improves and simplifies the design process from start to end and can be used by any marketer, blogger or website owner and anyone who needs engaging images, really!.
• FontJoy - FontJoy provides you simple font pairing suggestions based on their deep learning system.
• Plain Pattern - Plain Pattern is a simple SVG pattern creator tool made by Kenneth Cachia.
• Stencil - Ridiculously simple image creation for social media marketers, bloggers and small businesses.
• Fotor - Fotos is a free photo editor with an intuitive, modern interface. It's fast, visual and has virtually no learning curve.
• Desygner - Desygner is a free online image editor (as of this writing) - that allows you to create and modify graphics for virtually any project under the sun.
• BeFunky - BeFunky allows user to create professional-caliber graphic designs with simple modern templates using drag and drop tools.
• Pixlr - Pixlr’s free online image editor allows you to edit your photos with over 600 overlays, effects and borders.
• Pablo - Pablo is the child of Buffer and is a really simple graphical content editor for all your social media needs.
• Adcat - AdCat is a tool for getting the right-sized social media ad images. it prides itself on it's ability to post your graphical adds fast! with one click.
• Marvel APP - Prototyping for websites, mobiles and other devices, in a friendly interface.
• [PencilSheep] - A image editor with interface similar to Photoshop but free. Unfortunately it's no longer maintened.

• Sentry - Open-source error tracking that helps developers monitor and fix crashes in real time. Iterate continuously. Boost efficiency. Improve user experience.
• Bugsnag - Monitors application stability, so you can make data-driven decisions on whether you should be building new features, or fixing bugs.
• Bugsee - Flight recorder for your iOS and Android apps. See video, network and logs that led to bugs and crashes in live apps.
• Freshping - Monitor 50 URLs in 1-minute interval with 10 Global locations and get 5 Public status pages for free
• Cronhub - Get instant alerts when any of your background jobs fail silently or run longer than expected.
• Uptime Robot - Downtime happens. Get notified! 50 monitors, checked every 5 minutes, totally free!
• Rollbar - Provides real-time error alerting & debugging tools for developers.
• Grafana - The open platform for beautiful analytics and monitoring.
• LogRocket - Stop guessing why bugs happen. LogRocket lets you replay what users do on your site, helping you reproduce bugs and fix issues faster.
• Exceptionless - Real-time exception reporting for ASP.NET, Web API, WebForms, WPF, Console, and MVC applications.

• Asana - The work management platform teams use to stay focused on the goals, projects, and daily tasks that grow your business.
• Teamwork - Three world-class individual products that can also work together to streamline your business.
• Freedcamp - The entirely free way to collaborate more efficiently with groups of people.
• Outplanr - Turn to-do lists into daily work plans
• Airtable - Part spreadsheet, part database, and entirely flexible, teams use Airtable to organize their work, their way.
• Trello - Trello's boards, lists, and cards enable you to organize and prioritize your projects in a fun, flexible and rewarding way.

• MailChimp - MailChimp now provide a landing page builder baked right into their existing newsletter builder.
• Carrd - Carrd is a platform for building simple, responsive, one-page sites.
• Landen - Generate, edit and publish beautiful websites in minutes. Landen is an entirely new approach to creating websites.
• Unicorn Platform - Unicorn Platform is a modern static landing page generator for startups.
• Cruip - Free landing page templates for startups.
• Webflow - Design, build, and launch responsive websites visually, while writing clean, semantic code for you.
• Launchaco - Create beautiful websites for free

• MOZ Link Expolrer - A comprehensive tool for link analysis.
• Quicksprout - Grow your traffic, improve your website, and increase your conversions
• Botify – Improve SEO - Botify gives SEO stakeholders the data, tools, and diagnostics necessary to create and maintain high quality digital assets for search engines and voice assistants.
• SE Ranking - A complete set of tools for site audit, competitor analysis, website ranking, keyword suggestion and grouping, backlink monitoring, automated professional reporting, and more.
• Google Adwords – Keyword Planner - Keyword Planner is like a workshop for building new Search Network campaigns or expanding existing ones
• Bing – Webmaster Tools - Understanding what leads people to your site can help you understand what to focus on to increase traffic. Our detailed reports help you with this.
• MOZ – SEO - Help Try the best free tools for link building and analysis, keyword research, webpage performance, Twitter analytics, local listing audits, and more!
• Pagelocity - – Optimize your site Optimize your web site for an enhanced web experience.
• Saijo George Seo Tools - Find all tools you need as an SEO in one-spot
• Keyword Tool

• Shopify - One platform to sell products to anyone, anywhere—online with your ecommerce store, online marketplaces, and social media, and in-person with point of sale.
• Carrd - Carrd is a platform for building simple, responsive, one-page sites for pretty much anything, whether it's a personal profile, a landing page with a MailChimp signup form, or something a bit more elaborate. It's fast, flexible, simple to use, and 100% free.
• Webyo - Visually build stunning white label websites for your clients without code.​
• Weebly - Build a professional website with Drag and Drop
• Sheet2Site - Create a website from Google Sheets without writing code
• SquareSpace - Squarespace is the all-in-one solution for anyone looking to create a beautiful website. Domains, eCommerce, hosting, galleries, analytics, and 24/7 support all included.
• Webflow - Design, build, and launch responsive websites visually, while writing clean, semantic code for you.
• Tilda - A clean user interface with a modular drag and drop system. 450+ pre-designed blocks are ready for your web projects
• Strikingly - Strikingly is a drag and drop website builder for anyone to create a gorgeous, mobile-friendly website easily
• ReadyMag - With Readymag you can create any kind of web publications using only one tool
• Ucraft - Create a free website, blog or online store with the Ucraft website builder. No coding required

• Postify - Schedule posts for free to Instagram, Facebook, Twitter and more.
• Buffer - Schedule posts, analyze performance, and manage all your social media accounts in one place.
• Quuu - Content scheduling, curation and recycling for your business on social media.
• EmbedSocial - Increase conversions with social proof, in seconds.
• Fomo - Social proof marketing platform.
• Crowdfire - Helps you discover and schedule content, and manage all your social accounts from one place.
• TweetDeck - Your personal browser for staying in touch with what's happening on Twitter.
• Hootsuite - Manage all your social media in one place.

• Scinote - Scientific data management and team collaboration. One Team with unlimited number of users, backup and 1 GB storage space
• Appear.in - One click video conversations, for free
• Jitsi.org - One click video conversations, screen sharing, for free
• Microsoft Teams - Chat and inbox, free for teams up to 5
• Riot - Free for unlimited users with some feature limitations
• Igloo - Chat, for GitHub. Unlimited public and private rooms, free for teams up to 25
• Flock - One place for all your conversations, for free, need a Google account
• Cnverg - Private or cloud storage, file sharing, sync, discussions. Private version is full. Cloud version has just 1 GB
• Zoom - Share and discuss ideas with your team through instant messaging on the web or on your mobile
• Talky - The scheduling tool you'll actually use. Find a date for a meeting two times faster talky.io
• Typetalk - Secure Video and Web conferencing, add-ons available. Free limited to 40 minutes
• Google Chat - A faster way for your team to communicate. Free Unlimited Messages, Channels, Users, Apps & Integrations
• Gitter - Internal portal for sharing documents, blogs and calendars etc. Free for up to 10 users.
• Slack - A decentralized communication tool built on Matrix. Group chats, direct messaging, encrypted file transfers, voice and video chats, and easy integration with other services.
• Flowdock - Flowdock brings all of your conversations, work items and tools into one place. Prioritize work, solve problems, search and organize across teams, locations and timezones.

• Deposit Photos - Stock agency with millions of premium high-quality stock photos, royalty-free images, illustrations.
• Free Stock Images - Free Stock Images provides over 15,000 high quality stock images.
• Kaboompics - Kaboompics is a collection of High Quality Photos offered for free to bloggers, website owners, small businesses, freelancers & social media ninjas.
• Negative Space - Finding high res images for personal and commercial projects.
• Burst - Burst, a new free stock photo site by Shopify, featuring over 1000 stunning free images.
• Zoommy - Zoommy helps you find awesome free stock photos for your creative product or website. Zoomy has over 35,000 images under the creative commons license.
• Splitshire - You can find abstract images, or photographs of animals, vehicles, blur backgrounds, fashion, food, interiors, landscapes, nature, people or wedding related images, on SplitShire.
• IM Free - IM Free offers not only free social media images, but is a “curated collection of free web design resources, all for commercial use.
• Foodies Feed - Collection of thousands of non-stockish, realistic and natural looking images of foods.
• New Old Stock - Vintage photos from the Public Archives that are free of known copyright restrictions.
• Death To The Stock Photo - Have high quality photos sent directly to your email every month.
• Stock.io - Discover thousands of original and high quality images, graphics, vectors, icons, fonts and videos, and get inspired for your next creative project with Stockio.
• Gratisography - Gratisography, find some of the best alternative, wacky and strange stock photos.
• Undraw - unDraw provides a large collection of stunning flat design illustrations you can use for free.
• Unsplash - Unsplash is a collection of free high-resolution photos and has arguably become the best source for stock images.
• Stocksnap.io - StockSnap.io has a large selection of beautiful free stock photos and high resolution images.
• Pixabay - Pixabay provides a variety of high definition stock videos and stock imagery royalty free.
• Pixel Buddha - Selective collection of free mockup resources. Each of them can become a great start for building your work presentation.
• Makerbook - Largest Collection of Hand-picked Free Stock Photos for Startups
• StockSnap.io - Hundreds of high resolution images added weekly. Free from copyright restrictions.
• Mediachain - Attribution Engine Find great images and reward creators
• Freerange - Many thousands of free stock photos, keyword searchable, free for commercial use.
• Free Tree Textures - A high resolution texture of a tree
• Vintage Stock Photos - Vintage travel photos from around the world, totally free.
• Tookapic - Tookapic is a unique photography challenge that requires you to take and publish only one photo a day. It helps people improve their photography and appreciate their photos more.
• SSYER - Stock site for Free Images nicely collected in an infinite scroll
• Barn Images - Here, you will find only quality photography that’s fresh, with nothing that duplicates the stock photography you’ll generally find elsewhere. We call our collection “non-stock,” and we add new free images every weekday.
• Free Nature Stock - Free nature stock photos. Updated daily.
• Everypixel - Aggregated royalty free images and stock photos out there, free and premium.
• Pixabay - Free images and videos you can use anywhere
• StickPNG - Catalogue of free transparent PNG images to easily work into your next project
• Nomad Pictures - nomad pictures is a free cc0 photo content site for digital nomads, location independent workers and travelling wine drinkers.
• MMT Free - Free for commercial use (CC0) - photos
• Glyph Co - Glyphs is the easiest way to find, customize, and deliver graphics. Sign up below to start using and customizing any of our thousands of SVG graphics or stock photos in less than five minutes:
• Pexels Stock Photography - Pexels provides high quality and completely free stock photos licensed under the Creative Commons Zero (CC0) - license. All photos are nicely tagged, searchable and also easy to discover through our discover pages.
• Free Stock Images - Free stock photos in high resolution. Curated collection.

• Colors - Browse latest and trendy color combinations.
• ColourHunt - One of our favourite colour inspiration tools that always have the best palettes to use to spur your project on in the direction you want.
• LOL Colors - Curated color palette inspiration.
• Background Gradient - WebGradients is a free collection of 180 linear gradients that you can use as content backdrops in any part of your website
• Gradient Daze
• Colour Thief - Grab the colour palette from an image.Uses Javascript and the canvas tag to make it happen. Grab an image, drop it in and get the exact colours you need for your next project
• Material Colors - Google's Material Design Colors
• Adobe CC - Color Get colours from photos and find your next colour palette easily with this tool.
• Coolors - The super fast color schemes generator! Create, save and share perfect palettes in seconds!
• Paletton - Creates interesting color palettes given one color. Palette can be edited.
• Color Farm - Daily handpicked colors from popular Dribbble Shots
• Falt UI Color - A simple easy to use flat color palette
• Pixels - Beautiful designs and copywriting, every day
• CSS Gradient - CSS Gradient Generator
• Coolors Palettes - Browse latest and trendy color combinations with thousands of pre made color palettes to choose from
• Colour Claim
• ColourDrop - Random colour palettes with inspiration in mind to get you going on a project or inject that inspiration you need.

• Coverr – Stock Videos - Beautiful free videos for your homepage, 7 new videos every Monday.
• Pexels – Video - Pexels Videos offers completely free videos.
• Mazwai - Great collection of free creative commons HD video clips & footages @mazwaiii
• Videvo - Videvo offers completely free stock video footage and motion graphics for use in any project. ​No Strings attached.
• Life Of Vids - Life of Vids provides free footage videos, clips and loops that are free of copyright restrictions.
• Vimeo HD Stock - All clips you find in this group are give away for free use in productions.

• Sumo - The easiest way to turn your visitors into customers.
• Hello Bar - Convert visitors into customers with a Hello Bar
• Blog Ideas Generator - HubSpot’s free Blog Ideas Generator tool gives you a year’s worth of blog post ideas.