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Handpicked Open Source Alternatives to Paid Softwares

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421 projects, sorted by GitHub stars.

Comp AI CRM

Alternative toAttio

Open source agentic CRM with a durable research agent

  • 11,564 GitHub stars
  • MITLicence MIT
  • #CRM

Shadowbroker

Alternative toRecorded Future

Self-hosted OSINT map: aircraft, ships, CCTV, satellites, 60+ feeds.

  • 11,344 GitHub stars
  • AGPL-3.0Licence AGPL-3.0

presenton

Alternative toGamma

Self-hosted AI slide generator with BYOK support and PPTX export.

  • 11,242 GitHub stars
  • Apache-2.0Licence Apache-2.0

Kutt

Alternative toBitly

Self-hosted URL shortener with analytics and custom domains

  • 11,160 GitHub stars
  • MITLicence MIT

FerretDB

Alternative toMongoDB Atlas

Run MongoDB apps on PostgreSQL with no code changes needed

  • 11,089 GitHub stars
  • Apache-2.0Licence Apache-2.0
  • #Database

Centrifugo

Alternative toPusher

Scalable real-time messaging server with WebSocket support

  • 10,892 GitHub stars
  • Apache-2.0Licence Apache-2.0

Concat

Alternative toCapCut

Free, open-source video editor with local AI captions.

  • 10,813 GitHub stars
  • AGPL-3.0Licence AGPL-3.0
  • #Video

Mautic

Alternative toHubSpot Marketing Hub

Self-hosted marketing automation with email and campaigns

  • 10,806 GitHub stars
  • GPL-3.0Licence GPL-3.0
  • #Email

reclip

Alternative to4K Video Downloader Plus

Self-hosted video downloader for YouTube, TikTok, and 1000+ sites

  • 10,737 GitHub stars
  • MITLicence MIT
  • #Video

Lago

Alternative toStripe Billing

Usage-based billing API for metered and hybrid SaaS pricing

  • 10,699 GitHub stars
  • AGPL-3.0Licence AGPL-3.0

Keda

Alternative toKedify

Event-driven Kubernetes autoscaling with 70+ scalers and scale to zero

  • 10,646 GitHub stars
  • Apache-2.0Licence Apache-2.0

flowsint

Alternative toMaltego

Self-hosted graph tool for OSINT and cybersecurity investigations

  • 9,878 GitHub stars
  • Apache-2.0Licence Apache-2.0
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