Free tools for developers to build their apps

This page summarizes the projects mentioned and recommended in the original post on dev.to

CodeRabbit: AI Code Reviews for Developers
Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.
coderabbit.ai
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Nutrient - The #1 PDF SDK Library
Bad PDFs = bad UX. Slow load times, broken annotations, clunky UX frustrates users. Nutrient’s PDF SDKs gives seamless document experiences, fast rendering, annotations, real-time collaboration, 100+ features. Used by 10K+ devs, serving ~half a billion users worldwide. Explore the SDK for free.
nutrient.io
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  1. PostHog

    🦔 PostHog provides open-source web & product analytics, session recording, feature flagging and A/B testing that you can self-host. Get started - free.

    6- PostHog

  2. CodeRabbit

    CodeRabbit: AI Code Reviews for Developers. Revolutionize your code reviews with AI. CodeRabbit offers PR summaries, code walkthroughs, 1-click suggestions, and AST-based analysis. Boost productivity and code quality across all major languages with each PR.

    CodeRabbit logo
  3. cli

    Official Command Line Interface for the IPinfo API (IP geolocation and other types of IP data) (by ipinfo)

    3- IPinfo

  4. free-for-dev

    A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev

    Free resources list 👈🏻

  5. flyctl

    Command line tools for fly.io services

    2- fly.io

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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the 4th most popular programming language
based on number of references?