Knowledge Hub

Best links Websites, Programming News, Tutorials & More links

Social Media

Analytics, Events and Statistics

  • amplitude.com - 1 million monthly events, up to 2 apps
  • analytics.google.com - Google Analytics
  • expensify.com - Expense reporting, free personal reporting approval workflow
  • getinsights.io - Privacy-focused, cookie free analytics, free for up to 5k events/month.
  • heap.io - Automatically captures every user action in iOS or web apps. Free for up to 5,000 visits/month
  • hotjar.com - Per site: 2,000 pages views/day, 3 heatmaps, data stored for 3 months,...
  • imprace.com - Landing page analysis with suggestions to improve bounce rates. Free 5 landing pages/domain
  • keen.io - Custom Analytics for data collection, analysis and visualization. 50,000 events/month free
  • metrica.yandex.com - Unlimited free analytics
  • mixpanel.com - Free 25,000 points or 200,000 with their badge on your site
  • Moesif - API analytics for REST and GraphQL. (Free up to 500,000 API calls/mo)
  • optimizely.com - A/B Testing solution, free starter plan, 1 website, 1 iOS and 1 Android app
  • quantcast.com - Unlimited free analytics
  • sematext.com - Free for up to 50 K actions/month, 1-day data retention, unlimited dashboards, users, etc.
  • usabilityhub.com - Test designs and mockups on real people, track visitors. Free for one user, unlimited tests
  • www.heatlyanalytics.com - Free Heatmap tool to understand UI/UX.

Design and UI

  • Adobe XD - Wireframe & Prototyping tool similar to Sketch. Free plan covers: 1 active shared design spec, Adobe Fonts Free (limited set of fonts), 2GB of cloud storage.
  • AllTheFreeStock - a curated list of free stock images, audio and videos.
  • clevebrush.com - Free Graphics Design / Photo Collage App, also they offer paid integration of it as component.
  • cloudconvert.com - Convert anything to anything. 208 supported formats including videos to gif.
  • CodeMyUI - Handpicked collection of Web Design & UI Inspiration with Code Snippets.
  • designer.io - Design tool for UI, illustrations and more. Has a native app. Free.
  • figma.com - Online, collaborative design tool for teams; free tier includes unlimited files and viewers with a max of 2 editors and 3 projects.
  • imagebin.ca - Pastebin for images.
  • Invision App - UI design and prototyping tool. Desktop and webapp available. Free to use with 1 active prototype.
  • landen.co - Generate, edit and publish beautiful websites and landing pages for your startup. All without code. Free tier allows you to have one website, fully customizable and published on the web.
  • lensdump.com - Free cloud image hosting.
  • marvelapp.com - Design, prototyping and collaboration, free plan limited to one user and one project.
  • Mindmup.com - Unlimited mind maps for free, and store them in the cloud. Your mind maps are available everywhere, instantly, from any device.
  • Pencil - Open source design tool using Electron.
  • pexels.com - Free stock photos for commercial use. Has free API that allows you to search photos by keywords.
  • photopea.com - A Free, Advanced online design editor with Adobe Photoshop UI supporting PSD, XCF & Sketch formats (Adobe Photoshop, Gimp and Sketch App).
  • pixlr.com - Free online browser editor on the level of commercial ones.
  • Proto.io - Create fully interactive UI prototypes without coding. Free tier available when free trial ends. Free tier includes: 1 user, 1 project, 5 prototypes, 100MB online storage and preview in proto.io app.
  • resizeappicon.com - A simple service to resize and manage your app icons.
  • unDraw - A constantly updated collection of beautiful svg images that you can use completely free and without attribution.
  • unsplash.com - Free stock photos for commercial and noncommercial purposes (do-whatever-you-want license).
  • vectr.com - Free Design App for Web + Desktop.
  • walkme.com - Enterprise Class Guidance and Engagement Platform, free plan 3 walk-thrus up to 5 steps/walk.
  • Webflow - WYSIWYG web site builder with animations and website hosting. Free for 2 projects.
  • whimsical.com - Collaborative flowcharts, wireframes, sticky notes and mind maps. Create up to 4 free boards.
  • Zeplin - Designer and developer collaboration platform. Show designs, assets and styleguides. Free for 1 project.

Visitor Session Recording

  • FullStory.com - 1,000 sessions/month with 1 month data retention and 3 user seats. More information here.
  • hotjar.com - Per site: 2,000 pages views/day, 3 heatmaps, data stored for 3 months,...
  • inspectlet.com - 100 sessions/month free for 1 website
  • mouseflow.com - 100 sessions/month free for 1 website
  • mousestats.com - 100 sessions/month free for 1 website
  • smartlook.com - free packages for web and mobile apps (1500 sessions/month), 3 heatmaps, 1 funnel, 1-month data history
  • usersurge.com - 250K sessions per month for individuals.

Screenshot APIs

  • ApiFlash - A screenshot API based on Aws Lambda and Chrome. Handles full page, capture timing, viewport dimensions, ...
  • microlink.io - It turns any website into data such as metatags normalization, beauty link previews, scraping capabilities or screenshots as a service. 250 reqs/day every day free.
  • ScreenshotAPI.net - Screenshot API use one simple API call to generate screenshots of any website. Build to scale and hosted on Google Cloud. Offers 100 free screenshots per month.
  • screenshotlayer.com - Capture highly customizable snapshots of any website. Free 100 snapshots/month
  • screenshotmachine.com - Capture 100 snapshots/month, png, gif and jpg, including full-length captures, not only home page
  • WWW2PNG - Capture screenshots of any website with basic customization. Includes automatic blockchain anchoring and full page capture. Completely free service.

CDN and Protection

  • bootstrapcdn.com - CDN for bootstrap, bootswatch and fontawesome.io
  • cdnjs.com - CDN for JavaScript libraries, CSS libraries, SWF, images, etc.
  • cloudflare.com - Basic service is free, good for a blog, it also offers a free SSL certificate service and 5 firewall rules.
  • ddos-guard.net - Free CDN, DDoS protection and SSL certificate
  • developers.google.com - The Google Hosted Libraries is a content distribution network for the most popular, Open Source JavaScript libraries
  • jare.io - CDN for images. Uses AWS CloudFront
  • jsdelivr.com - CDN of OSS (JS, CSS, fonts) for developers and webmasters, accepts PRs to add more
  • Microsoft Ajax - The Microsoft Ajax CDN hosts popular third-party JavaScript libraries such as jQuery and enables you to easily add them to your Web application
  • netdepot.com - First 100 GB free/month
  • ovh.ie - Free DDos protection and SSL certificate
  • PageCDN.com - Offers free Public CDN for everyone, and free Private CDN for opensource / nonprofits.
  • pika.dev/cdn - The 100% Native ES Module JavaScript CDN
  • raw.githack.com - A modern replacement of rawgit.com which simply hosts file using Cloudflare
  • section.io - A simple way to spin up and manage a complete Varnish Cache solution. Supposedly free forever for one site
  • speeder.io - Uses KeyCDN. Automatic image optimization and free CDN boost. Free and does not require any server changes
  • staticaly.com - CDN for Git repos (GitHub, GitLab, Bitbucket), WordPress-related assets and images
  • toranproxy.com - Proxy for Packagist and GitHub. Never fail CD. Free for personal use, 1 developer, no support
  • unpkg.com - CDN for everything on npm
  • Web Support Revolution - Free CDN, backup, firewall, antivirus and monitoring.

Web Hosting

  • 000WebHost - Zero cost website hosting with PHP, MySQL, cPanel & no ads!
  • Awardspace.com - Free web hosting + a free short domain, PHP, MySQL, App Installer, Email Sending & No Ads.
  • bubble.is - Visual programming to build web and mobile apps without code, free 100 visitors/month, 2 apps
  • Byet - Byet provides you with a massive free, and ad-free load balanced free web hosting service including PHP, MySQL, FTP, Vistapanel & more!..
  • cloudno.de - Free cloud hosting for Node.js apps.
  • devport.co - Turn GitHub projects, apps and websites into a personal developer portfolio
  • Free Hosting - Free Hosting With PHP 5, Perl, CGI, MySQL, FTP, File Manager, POP E-Mail, free sub-domains, free domain hosting, DNS Zone Editor, Web Site Statistics, FREE Online Support and many more features not offered by other free hosts.
  • Freehostia - FreeHostia offers free hosting services incl. an industry-best Control Panel & a 1-click installation of 50+ free apps. Instant setup. No forced ads.
  • gitlab.com - Hosting static site directly from GitLab repository
  • heliohost.org - Community powered free hosting for everyone.
  • neocities.org - Static, 1 GB free storage with 200 GB Bandwidth.
  • netlify.com - Builds, deploy and hosts static site or app, free for 100 GB data and 100 GB/month bandwidth
  • pages.github.com - Hosting static site directly from GitHub repository
  • pantheon.io - Drupal and WordPress hosting, automated DevOps and scalable infrastructure. Free for developers and agencies
  • readthedocs.org - Free documentation hosting with versioning, PDF generation and more
  • render.com - A unified platform to build and run all your apps and web app free SSL, a global CDN, private networks and auto deploys from Git, free for static web page.
  • sourceforge.net - Find, Create and Publish Open Source software for free
  • surge.sh - Static web publishing for Front-End developers. Unlimited sites with custom domain support
  • tilda.cc - One site, 50 pages, 50 MB storage, only the main pre-defined blocks among 170+ available, no fonts, no favicon and no custom domain
  • txti.es - Quickly create web pages with markdown.
  • Versoly - SaaS focussed website builder - unlimited websites, 70+ blocks, 5 templates, custom CSS, favicon, SEO and forms. No custom domain.
  • DemosWP - WordPress free hosting for tests and development sites.

Issue Tracking and Project Management

  • acunote.com - Free project management and SCRUM software for up to 5 team members
  • asana.com - Free for private project with collaborators
  • Azure DevOps - Unlimited free private code repositories; Tracks bugs, work items, feedback and more
  • Basecamp - To-do lists, milestone management, forum-like messaging, file sharing, and time tracking. Up to 3 projects, 20 users, and 1GB of storage space.
  • bitrix24.com - Free intranet and project management tool
  • cacoo.com - Online diagrams in real-time: flowchart, UML, network. Free max. 15 users/diagram, 25 sheets
  • clickup.com - Project management. Free, premium version with cloud storage. Mobile applications and Git integrations available
  • Cloudcraft - Design a professional architecture diagram in minutes with the Cloudcraft visual designer, optimized for AWS with smart components that show live data too.
  • Clubhouse - Project management platform. Free for up to 10 users forever
  • contriber.com - Customizable project management platform, free starter plan, 5 workspaces
  • draw.io - Online diagrams stored locally, in Google Drive, OneDrive or Dropbox. Free for all features and storage levels
  • github.com - In addition to its Git storage facility, GitHub offers basic issue tracking
  • Gitlab - Offers basic issue tracking for projects.
  • gliffy.com - Online diagrams: flowchart, UML, wireframe,... Also plugins for Jira and Confluence. 5 diagrams and 2 MB free
  • GraphQL Inspector - GraphQL Inspector ouputs a list of changes between two GraphQL schemas. Every change is precisely explained and marked as breaking, non-breaking or dangerous.
  • huboard.com - Instant project management for your GitHub issues, free for Open Source
  • Instabug - A comprehensive bug reporting and in-app feedback SDK for mobile apps. Free plan up to 1 app and 1 member.
  • kanbanflow.com - Board-based project management. Free, premium version with more options
  • kanbantool.com - Kanban board-based project management. Free, paid plans with more options
  • kanrails.com - Kanban board-based project management. Free for 3 collaborators, 2 projects and 5 tracks. Paid plans available for unlimited collaborators, projects and tracks.
  • LeanBoard - Collaborative whiteboard with sticky notes for your GitHub issues (Useful for Example Mapping and other techniques)
  • Office 365 Developer - Free one-year Office 365 E3 subscription for development/testing.
  • Ora - Agile task management & team collaboration. Free for up to 3 users and files are limited to 10 MB.
  • pivotaltracker.com - Free for unlimited public projects and two private projects with 3 total active users (read-write) and unlimited passive users (read-only).
  • plan.io - Project Management with Repository Hosting and more options. Free for 2 users with 10 customers and 500MB Storage
  • planitpoker.com - Free online planning poker (estimation tool)
  • senseitool.com - An agile retrospective tool - Free.
  • SpeedBoard - Board for Agile and Scrum retrospectives - Free.
  • Tadum - Meeting agenda and minutes app designed for recurring meetings, free for teams up to 10
  • taiga.io - Project management platform for startups and agile developers, free for Open Source
  • targetprocess.com - Visual project management, from Kanban and Scrum to almost any operational process. Free for unlimited users, up to 1,000 data entities {more details}
  • taskade.com - Real-time collaborative task lists and outlines for teams
  • taskulu.com - Role based project management. Free up to 5 users. Integration with GitHub/Trello/Dropbox/Google Drive
  • testlio.com - Issue tracking, test management and beta testing platform. Free for private use
  • todoist.com - Collaborative and individual task management. Free, Premium and Team plans are available. Discounts provided for eligible users.
  • trello.com - Board-based project management. Unlimited Personal Boards, 10 Team Boards.
  • ubertesters.com - Test platform, integration and crowdtesters, 2 projects, 5 members
  • vivifyscrum.com - Free tool for Agile project management. Scrum Compatible
  • YouTrack - Free hosted YouTrack (InCloud) for FOSS projects, private projects (free for 3 users). Includes time tracking and agile boards
  • zenhub.io - The only project management solution inside GitHub. Free for public repos, OSS and nonprofit organizations
  • zenkit.com - Project management and collaboration tool. Free for up to 5 members, 5 GB attachments.

Monitoring

  • apimetrics.io - Automated API Performance Monitoring, Testing and Analytics. Free Plan, manually make API calls and Run from their West Coast servers
  • appdynamics.com - Free for 24 hours metrics, application performance management agents limited to one Java, one .NET, one PHP and one Node.js
  • appneta.com - Free with 1-hour data retention
  • assertible.com - Automated API testing and monitoring. Free plans for teams and individuals.
  • blackfire.io - Blackfire is the SaaS-delivered Application Performance Solution. Free Hacker plan (PHP only)
  • bmc.com - Free 1 second resolution for up to 10 servers
  • circonus.com - Free for 20 metrics
  • cloudsploit.com - AWS security and configuration monitoring. Free: unlimited on-demand scans, unlimited users, unlimited stored accounts. Subscription: automated scanning, API access, etc.
  • datadoghq.com - Free for up to 5 nodes
  • deadmanssnitch.com - Monitoring for cron jobs. 1 free snitch (monitor), more if you refer others to sign up
  • elastic.co - Instant performance insights for JS developers. Free with 24 hours data retention
  • freeboard.io - Free for public projects. Dashboards for your Internet of Things (IoT) projects
  • freshworks.com - Monitor 50 URLs at 1-minute interval with 10 Global locations and 5 Public status pages for Free
  • ghostinspector.com - Free website and web application monitoring. Single user, 100 test runs/month
  • gitential.com - Software Development Analytics platform. Free: unlimited public repositories, unlimited users, free trial for private repos. On-prem version available for enterprise.
  • healthchecks.io - Monitor your cron jobs and background tasks. Free for up to 20 checks.
  • instrumentalapp.com - Beautiful and easy-to-use application and server monitoring with up to 500 metrics and 3 hours of data visibility for free
  • loader.io - Free load testing tools with limitations
  • nodequery.com - Free basic server monitors up to 10 servers
  • opsgenie.com - Powerful alerting and on-call management for operating always-on services. Free up to 5 users.
  • paessler.com - Powerful infrastructure and network monitoring solution including alerting, strong visualization capabilities and basic reporting. Free up to 100 sensors.
  • pagertree.com - Simple interface for alerting and on-call management. Free up to 5 users.
  • pingbreak.com - Modern uptime monitoring service. Check unlimited URLs and get downtime notifications via Discord, Slack or email.
  • sematext.com - Free for 24 hours metrics, unlimited number of servers, 10 custom metrics, 500,000 custom metrics data points, unlimited dashboards, users, etc.
  • sitemonki.com - Website, domain, Cron & SSL monitoring, 5 monitors in each category for free
  • skylight.io - Free for first 100,000 requests (Rails only)
  • speedchecker.xyz - Performance Monitoring API, checks Ping, DNS, etc.
  • stathat.com - Get started with 10 stats for free, no expiration
  • statuscake.com - Website monitoring, unlimited tests free with limitations
  • thousandeyes.com - Network and user experience monitoring. 3 locations and 20 data feeds of major web services free
  • uptimerobot.com - Website monitoring, 50 monitors free

Security and PKI

  • alienvault.com - Uncovers compromised systems in your network
  • auth0.com - Hosted free for development SSO. Up to 2 social identity providers for closed-source projects.
  • bitninja.io - Botnet protection through a blacklist, free plan only reports limited information on each attack
  • cloudsploit.com - Amazon Web Services (AWS) security and compliance auditing and monitoring
  • crypteron.com - Cloud-first, developer-friendly security platform prevents data breaches in .NET and Java applications
  • duo.com - Two-factor authentication (2FA) for website or app. Free for 10 users, all authentication methods, unlimited, integrations, hardware tokens
  • foxpass.com - Hosted LDAP and RADIUS. Easy per-user logins to servers, VPNs and wireless networks. Free for 10 users
  • globalsign.com - Free SSL certificates for Open Source
  • Have I been pwned? - REST API for fetching the information on the breaches.
  • Internet.nl - Test for modern Internet Standards like IPv6, DNSSEC, HTTPS, DMARC, STARTTLS and DANE
  • letsencrypt.org - Free SSL Certificate Authority with certs trusted by all major browsers
  • logintc.com - Two-factor authentication (2FA) by push notifications, free for 10 users, VPN, Websites and SSH
  • meterian.io - Monitor Java, Javascript, .NET, Scala, Ruby and NodeJS projects for security vulnerabilities in dependencies. Free for one private project, unlimited projects for open source.
  • Mozilla Observatory - Find and fix security vulnerabilities in your site.
  • Okta - User management, authentication and authorization. Free for up to 1000 monthly active users.
  • onelogin.com - Identity as a Service (IDaaS), Single Sign-On Identity Provider, Cloud SSO IdP, 3 company apps and 5 personal apps, unlimited users
  • opswat.com - Security Monitoring of computers, devices, applications, configurations,... Free 25 users and 30 days history
  • ponycheckup.com - An automated security checkup tool for Django websites
  • Protectumus - Free website security check, site antivirus and server firewall (WAF). Email and SMS notifications for registered users.
  • pyup.io - Monitor Python dependencies for security vulnerabilities and update them automatically. Free for one private project, unlimited projects for open source.
  • qualys.com - Find web app vulnerabilities, audit for OWASP Risks
  • report-uri.io - CSP and HPKP violation reporting
  • ringcaptcha.com - Tools to use phone number as id, available for free
  • Shieldfy - Web application firewall and vulnerability detection for developers, free plan up to 100k requests per month.
  • snyk.io - Can find and fix known security vulnerabilities in your open source dependencies. Unlimited tests and remediation for open source projects. Limited to 200 tests/month for your private projects.
  • Sqreen - Application security monitoring and protection (RASP, WAF and more) for web applications and APIs. Free for 1 app and 3 million requests.
  • ssllabs.com - Very deep analysis of the configuration of any SSL web server
  • Sucuri SiteCheck - Free website security check and malware scanner
  • threatconnect.com - Threat intelligence: It is designed for individual researchers, analysts and organizations who are starting to learn about cyber threat intelligence. Free up to 3 Users
  • tinfoilsecurity.com - Automated vulnerability scanning. Free plan allows weekly XSS scans

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