Open Source Apps

Created by Nelson de Benito

1155 apps ( Last updated: 5 hours ago )

Having public code isn't just a philosophy: it means anyone can audit, fix, and improve it. That is why some of the most reliable and long-lasting apps out there are open source. On Windows, you'll find alternatives like this for almost any task (video editing, office work, security, development) and many of them, like VLC or GIMP, have spent decades competing head-to-head with paid software. No subscriptions. No licenses. Backed by communities that never stop updating them.

1. Proton VPN

Built by the ProtonMail team, this open-source VPN offers one-click servers in dozens of countries, live speed monitoring, and strong OpenVPN/IKEv2 encryption...

4.3

1.7 M downloads

2. Codex

Official OpenAI coding agent that writes, edits, tests, and refactors code in isolated environments. It can fix bugs, analyze repos, and draft review-ready pull requests...

3.3

48.8 k downloads

3. FormatFactory

Powered by FFmpeg and other open-source engines, this converter handles video, audio, images, and documents with batch processing, disc ripping, PDF tools, and video downloads...

4.5

24 M downloads

4. Telegram Desktop

Official Windows client for Telegram syncs your chats and files fast. Handle video calls, screen sharing, polls, and big group conversations without hogging resources...

4.3

22.1 M downloads

5. PCSX2

Play almost any PS2 game on your PC with sharper graphics and huge compatibility. Tweak visuals, use any controller, and create unlimited memory cards...

4.4

8 M downloads

6. Psiphon

Open‑source VPN that auto‑connects on launch, beats blocks, and lets you pick from 20+ regions. Portable, split tunneling, and optional speed boosts for power users...

4.2

11.7 M downloads

7. VLC Media Player

Plays almost any video or audio format without extra codecs, with a clean interface. Free, open-source, cross-platform, and it even handles DVDs and damaged files...

4.5

42.3 M downloads

8. DS4Windows

Use your DualShock 4 on PC with USB or Bluetooth. It maps the controller as an Xbox 360 pad and lets you build custom profiles...

4.2

2.6 M downloads

9. Rufus

Bootable USB creator for Windows, Linux, and FreeDOS images. Fast, portable, and open source, with MBR/GPT support for BIOS and UEFI systems...

4.3

22.3 M downloads

10. v2rayN

Project X and Xray-core power this open-source VPN client, letting you fine-tune VMess, TLS, TCP, and HTTP settings for private browsing around restrictions...

5.0

57.2 k downloads