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Open Source Alternatives to Popular Software

Over 1 million users replaced their proprietary tools with open source software. Discover the best alternatives and join the movement.

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InfluxDB
Sevalla
CodeRabbit
Sent
c15t
Docmost
Capture
Openlane
Favicon of Palform

Palform

Secure, encrypted forms with advanced features

  • Stars

    45

  • Last commit

    18 days ago

  • License

    AGPL-3.0
Build end-to-end encrypted forms with enterprise-grade features, no coding required. Protect sensitive data and enhance user trust.

Open Source Alternative to:

Favicon of Google Forms
Google Forms
Favicon of Wachd

Wachd

AI-powered root cause analysis for on-call alerts, self-hosted and air-gapped

  • Stars

    35

  • Last commit

    19 hours ago

  • License

    Apache-2.0
Receive alerts from Grafana, Datadog, and Prometheus with AI-generated root cause analysis. Self-hosted on Kubernetes, fully air-gapped capable, Apache 2.0 licensed.

Open Source Alternative to:

Favicon of incident.io
incident.io
Favicon of Friendly Captcha

Friendly Captcha

Invisible bot protection that respects user privacy

  • Stars

    32

  • Last commit

    3 days ago

  • License

    MPL-2.0
Privacy-compliant CAPTCHA alternative using proof-of-work technology. Protects websites from bots and spam without user interaction or data tracking.

Open Source Alternative to:

Favicon of reCAPTCHA
reCAPTCHA
Favicon of BugPin

BugPin

Self-hosted visual bug reporting with screenshot annotation

  • Stars

    29

  • Last commit

    2 days ago

  • License

    AGPL-3.0
Embeds a lightweight widget into web apps so users can capture screenshots, annotate issues, and submit reports with console logs and browser metadata included.

Open Source Alternative to:

Favicon of LogRocket
LogRocket
Favicon of Chobble Tickets

Chobble Tickets

Open source ticketing with no per-ticket fees

  • Stars

    31

  • Last commit

    4 hours ago

  • License

    AGPL-3.0
Event ticketing platform with flat £50/year fee, no commission or booking charges. Open source, encrypted, self-hostable with unlimited events and tickets.

Open Source Alternative to:

Favicon of Eventbrite
Eventbrite
Favicon of Reflet

Reflet

Turn user feedback into features that matter

  • Stars

    33

  • Last commit

    1 day ago

  • License

    SSPL-1.0
Collect feedback, prioritize with AI-powered voting, and share transparent roadmaps. Build products users love with automated triage and seamless integration.

Open Source Alternative to:

Favicon of Featurebase
Featurebase
Favicon of itsnotes

itsnotes

Self-hosted sticky notes with better organization

  • Stars

    30

  • Last commit

    10 hours ago

  • License

    MIT
A self-hosted, open-source note-taking app that keeps the Google Keep sticky-note feel while adding folders, timelines, list views, and import support.

Open Source Alternative to:

Favicon of Google Keep
Google Keep
Favicon of Hyvor Post

Hyvor Post

Privacy-first newsletter platform without tracking

  • Stars

    31

  • Last commit

    8 days ago

  • License

    AGPL-3.0
Create and send newsletters with complete privacy protection. No tracking, no data collection - just simple, clean email delivery with customizable templates and archive sites.

Open Source Alternative to:

Favicon of Resend
Resend
Favicon of Mimrai

Mimrai

AI-powered task management with radical focus

  • Stars

    26

  • Last commit

    5 months ago

  • License

    AGPL-3.0
Open source minimalist task management tool with AI companion that filters noise, automates coordination, and guides teams through complexity with calm focus.

Open Source Alternative to:

Favicon of Linear
Linear
Favicon of Sayr

Sayr

Bridge internal workflows with public collaboration

  • Stars

    20

  • Last commit

    12 hours ago

  • License

    Unknown
Source-available project management platform with dual views - internal team workspace and public portal for user feedback, voting, and progress tracking.

Open Source Alternative to:

Favicon of Linear
Linear
Favicon of StatusScout

StatusScout

Complete website health monitoring and security scanning

  • Stars

    15

  • Last commit

    3 months ago

  • License

    Unknown
Monitor website uptime, detect security vulnerabilities, find broken links, and simulate user flows. Get instant alerts when issues arise. Free tier available.

Open Source Alternative to:

Favicon of Pagerduty
Pagerduty
Favicon of Spanlens

Spanlens

AI
LLM observability: cost, latency, and traces in one place

  • Stars

    12

  • Last commit

    1 day ago

  • License

    MIT
Drop-in observability platform for OpenAI, Anthropic, and Gemini that logs every request, tracks costs, traces agent workflows, and flags anomalies and PII.

Open Source Alternative to:

Favicon of LangSmith
LangSmith
Favicon of Tiledesk

Tiledesk

AI
Elevate customer support with AI-powered chat solutions

  • Stars

    14

  • Last commit

    20 hours ago

  • License

    MIT
AI-enhanced live chat platform for seamless customer engagement, featuring chatbots, multichannel support, and advanced analytics.

Open Source Alternative to:

Favicon of Manychat
Manychat
Favicon of Suprascribe

Suprascribe

Automatically discover hidden subscriptions from your inbox

  • Stars

    10

  • Last commit

    5 days ago

  • License

    AGPL-3.0
Free subscription tracker that automatically scans your email to find recurring charges. Privacy-focused discovery with complete spending overview and management tools.

Open Source Alternative to:

Favicon of Rocket Money
Rocket Money
Favicon of Corpus

Corpus

Ask once, get answers across every document

  • Stars

    13

  • Last commit

    2 months ago

  • License

    AGPL-3.0
Upload files, ask questions, and get AI‑backed answers with citations. Compare, synthesize, and export results for teams and polished outputs.

Open Source Alternative to:

Favicon of Hebbia
Hebbia
Favicon of Grepture

Grepture

AI
Trace, evaluate, and protect every LLM call in one SDK

  • Stars

    7

  • Last commit

    2 months ago

  • License

    AGPL-3.0
An AI gateway that sits on the request path to handle PII redaction, prompt injection blocking, tracing, evals, and cost tracking for OpenAI, Anthropic, and Gemini.

Open Source Alternative to:

Favicon of Vercel AI Gateway
Vercel AI Gateway
Favicon of Proxed AI

Proxed AI

AI
Secure AI API management for iOS apps with DeviceCheck

  • Stars

    8

  • Last commit

    7 months ago

  • License

    AGPL-3.0
A secure proxy service that protects AI API keys using Apple DeviceCheck, enabling safe integration of ChatGPT, Claude, and other AI models in iOS apps
Favicon of Reqcore

Reqcore

AI
Own your hiring data with unlimited seats forever

  • Stars

    0

  • Last commit

    5 days ago

  • License

    AGPL-3.0
Self-hosted open-source ATS with no per-seat pricing. Full data ownership, modern tech stack, and complete control over your recruitment process.

Open Source Alternative to:

Favicon of Workable
Workable
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