Open Source alternatives to tools you Pay for

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

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  • WorkOS - The modern API for authentication & user identity.
  • Typesense

    Open Source alternative to Algolia + Pinecone and an Easier-to-Use alternative to ElasticSearch ⚡ 🔍 ✨ Fast, typo tolerant, in-memory fuzzy Search Engine for building delightful search experiences

    Typesense - Open Source Alternative to Algolia


    💬 Typebot is a powerful chatbot builder that you can self-host.

    Typebot - Open Source Alternative to Typeform

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  • supabase

    The open source Firebase alternative.

    Supabase - Open Source Alternative to Firebase

  • Sentry

    Developer-first error tracking and performance monitoring

    Sentry - Open Source Alternative For Error Tracking

  • rowy

    Low-code backend platform. Manage database on spreadsheet-like UI and build cloud functions workflows in JS/TS, all in your browser.

    Rowy - Open Source Alternative to Airtable

  • PostHog

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

    PostHog - Open Source Alternative to Mixpanel

  • Plausible Analytics

    Simple, open source, lightweight (< 1 KB) and privacy-friendly web analytics alternative to Google Analytics.

    Plausible - Open Source Alternative to Google Analytics


    Learn 300+ open source libraries for free using AI. LearnThisRepo lets you learn 300+ open source repos including Postgres, Langchain, VS Code, and more by chatting with them using AI!

  • penpot

    Penpot - The Open-Source design & prototyping platform

    Penpot - Open Source Alternative to Figma

  • Passbolt

    Passbolt Community Edition (CE) API. The JSON API for the open source password manager for teams!

    Passbolt - Open Source Alternative to 1Password

  • papermark

    Papermark is the open-source DocSend alternative with built-in analytics and custom domains.

    Papermark - Open Source Alternative to Docsend

  • n8n

    Free and source-available fair-code licensed workflow automation tool. Easily automate tasks across different services.

    N8N - Open Source Alternative to Zapier

  • Mastodon

    Your self-hosted, globally interconnected microblogging community

    Mastodon - Open Source Alternative to Twitter

  • Jenkins

    A static site for the Jenkins automation server

    Jenkins - Open Source Alternative For DevOps

  • Godot

    Godot Engine – Multi-platform 2D and 3D game engine

    Godot Engine - Open Source Alternative to Unity3D

  • Ghost

    Independent technology for modern publishing, memberships, subscriptions and newsletters.

    Ghost - Open Source Alternative to Medium

  • forem

    For empowering community 🌱

    Forem - Open Source Alternative to Circle

  • dub

    Open-source link management infrastructure.

    Dub - Open Source Alternative to Bitly

  • documenso

    The Open Source DocuSign Alternative.

    Documenso - Open Source Alternative to Docusign

  • devhunt

    A launching platform for dev tools, built by developers. Open-source and collaborative, we use GitHub pull requests for listings and user logins for genuine voting. Join us at DevHunt to showcase your innovations and empower developer tools across the web! Led by .

    DevHunt - Open Source Alternative to ProductHunt

  • ClickHouse

    ClickHouse® is a free analytics DBMS for big data

    ClickHouse - Open Source Alternative to BigQuery


    Scheduling infrastructure for absolutely everyone.

    Cal - Alternative to Calendly

  • WorkOS

    The modern API for authentication & user identity. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

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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