Open Source Apps

Created by Nelson de Benito

1208 apps ( Last updated: 6 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. 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

60.7 k downloads

2. 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...

4.2

1.7 M downloads

3. 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

22.2 M downloads

4. 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

22.4 M downloads

5. ReShade

Updated graphics for old games and movies are easy with this open-source post-processing tool. Add antialiasing, ambient occlusion, depth of field, and filters...

5.0

105.2 k downloads

6. 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

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...

4.4

42.3 M downloads

8. 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

9. Dolphin Emulator

Play nearly the entire Wii and GameCube library in HD, from 1080p to 8K. This free, open-source emulator adds controller support, graphics tweaks, and Netplay...

4.3

2.1 M downloads