this post was submitted on 02 Aug 2025
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We all love open-source software, but there are so many amazing projects out there that often go unnoticed. Let's change that! Share your favorite open-source software that you think more people should know about. Here’s how you can contribute:

  1. Single Option Per Comment: Mention one open-source software per comment to be able to easily find the most popular software.
  2. No Duplicates: Avoid duplicating software that has already been mentioned to ensure a wide variety of options.
  3. Upvote What You Love: If you see a software that you also appreciate, upvote it to help others discover it more easily.

Check out last year's post for more inspiration: Last Year's Post

Let's create a comprehensive list of open-source software that everyone should know about!

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[–] pineapple@lemmy.ml 2 points 1 day ago

tag studio It's a file manager designed to use tags instead of files because tags are a much better system. It's still in alpha and I haven't actually tested it yet but I plan to use it instead of regular file managers once it becomes stable and well supported.

[–] Dreaming_Novaling@lemmy.zip 3 points 1 day ago

FMD (FindMyDevice) - An absolute necessity, especially if you aren't using Google services.

It allows you to use any device/contact you've approved to send commands to enable/disable various settings on your devices, like bluetooth, do not disturb, camera, GPS, etc. via SMS, a FMD server (self-host optional) or from notifications (i.e. use Signal to send commands). So if you've simply lost your phone in your house you could make it ring no matter what, or if it got stolen you could lock it, use GPS, or factory reset it entirely.

The dev made it after he lost a phone that didn't have Find My Device activated.

[–] sic_semper_tyrannis@lemmy.today 2 points 1 day ago* (last edited 1 day ago)

SherpaOnnx TTS for Android. There are many different voices to pick from that sound very life like and are totally worth using with GPS apps like CoMaps.

Also, just found out about Medicat recently but haven't used it yet. It looks fantastic though: Medicat is a toolkit that helps compile a selection of the latest computer diagnostic and recovery tools into an easy to use toolkit.

Ventoy is a software you put on a USB stick to make it so you can load as many bootable ISOs as you want on it at the same time and still use the leftover space for normal file storage.

[–] Core_of_Arden@lemmy.ml 45 points 5 days ago* (last edited 5 days ago)

LibreOffice - simply the best office suite there is (IMHO). I was a MS-office user for years, but since I switched, I haven't looked back...

[–] EvanescentWave@discuss.tchncs.de 40 points 5 days ago (3 children)

VLC (VideoLAN media player): play media files, DVDs, network streams and more. Just works,

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[–] Core_of_Arden@lemmy.ml 42 points 5 days ago (6 children)

Inkscape - the best vector graphics program out there. So easy to use, and so powerful.

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[–] Core_of_Arden@lemmy.ml 37 points 5 days ago

Krita is a fantastic program for drawing. It's made for making beautiful paintings and animations.

[–] Core_of_Arden@lemmy.ml 36 points 5 days ago (1 children)

GIMP - unlike Krita - which is made for drawing - this is made for photo-editing. It's like Photoshop. The learning curve is a bit steep, but it is really powerful.

[–] Zerush@lemmy.ml 5 points 5 days ago (3 children)

Krita is certainly made for painting and also animation, but you can also edit photos with it, best to have both, GIMP and Krita, they are great complementing tools.

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[–] Core_of_Arden@lemmy.ml 35 points 5 days ago* (last edited 5 days ago)

Firefox - the original private webbrowser. Even though some people don't like the options in it (like those that let you stream Netflix and other DRM content). If people care about privacy, they use this browser, or one that is made from it...

[–] kazerniel@lemmy.world 43 points 6 days ago (1 children)

qBittorrent: only for your legal torrenting needs from e.g. archive.org :>

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[–] TheOrionArm@lemmy.world 42 points 6 days ago

librewolf a privacy-focused fork of the latest stable firefox (win,linux,mac)

[–] kazerniel@lemmy.world 40 points 6 days ago (2 children)
[–] DrSteveBrule@mander.xyz 12 points 6 days ago

Also has a great deDRM tool I used to remove kobo DRM!

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[–] lemmy_ng@lemmy.ml 16 points 5 days ago

alternativeto.net is great for finding these

[–] Core_of_Arden@lemmy.ml 30 points 5 days ago* (last edited 5 days ago) (4 children)

Thunderbird - a brilliant e-mail program, which also handles contacts, newsfeeds, calender and more. It's available for multiple platforms, like Android, Windows, Linux and so forth...

[–] Dreaming_Novaling@lemmy.zip 2 points 4 days ago

Just wanted to say that mobile Outlook had a stroke trying to let me login to my school account after doing a mandated password change, while Thunderbird let me login issue free. So yeah, Thunderbird is where I check my mail now (outside of my proton mail account)

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[–] LambdaRX@sh.itjust.works 83 points 6 days ago (4 children)

Newpipe, an YouTube client, which is:

  • ad free

  • lightweight

  • useful, it allows downloading videos, music, and playing them when screen is locked

  • usable without account

  • multi-platform, it can also serve as client for the PeerTube, Bandcamp, SoundCloud

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[–] callyral@pawb.social 28 points 6 days ago* (last edited 6 days ago) (2 children)

strudel. From the website:

With Strudel, you can expressively write dynamic music pieces.

The best place to actually make music with Strudel is the Strudel REPL

It's really fun to make music in it, I recommend trying it out!

link to repo (codeberg)

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[–] KarnaSubarna@lemmy.ml 13 points 5 days ago

NextCloud - Self hosted personal cloud solution that you can run on Docker or bare metal.

https://nextcloud.com/

[–] apprehensively_human@lemmy.ca 54 points 6 days ago (3 children)

Immich is a photo/video hosting solution à la Google photos

[–] pineapple@lemmy.ml 1 points 1 day ago

Immich is the GOAT! I can't wait for it's stable release.

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[–] BorgDrone@feddit.nl 11 points 5 days ago (1 children)

fzf fuzzy finder. Great tool to quickly find those files you were looking for.

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[–] Artisian@lemmy.world 12 points 5 days ago (2 children)

Librera (android pdf+ reader).

I spend a lot of time reading pdfs on my phone, this has done an excellent job. Well featured, responsive, and seems respectful of the battery.

Ads or payment if you buy from the playstore, but free on F-droid and source code is here.

[–] Dreaming_Novaling@lemmy.zip 2 points 4 days ago

+1 to Librera, I read downloaded fanfics on it when I'm on a long trip with no Wi-Fi. Very customizable, and can have an extremely dim dark mode.

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[–] kazerniel@lemmy.world 20 points 6 days ago

MusicBrainz Picard: superb mp3 tagger with online metadata lookup feature and audio track fingerprinting

[–] Sergio@lemmy.world 16 points 6 days ago

Vassal - an open-source (LGPL-2.1) boardgame engine. basically, people build different modules for each game they want to play, then they can play that game over the internet or solo. Mostly focused on "chit-and-hex" style wargames.

[–] kazerniel@lemmy.world 16 points 6 days ago

and lastly, Tor Browser: anonymous web browser to evade state censorship and surveillance

[–] Zerush@lemmy.ml 17 points 6 days ago (2 children)

Tox is easy-to-use software that connects you with friends and family without anyone else listening in. While other big-name services require you to pay for features, Tox is completely free and comes without advertising. Chat, P2P serverless, screen/file sharing, voice, video, groups, encrypted.

https://tox.chat/

https://github.com/TokTok/c-toxcore

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[–] Limonene@lemmy.world 5 points 4 days ago

sgt-puzzles. Simon Tatham's Portable Puzzle collection.

Contains a bunch of simple puzzles, of the minesweeper and sudoku style. Loopy is my favorite.

Available for Linux, Windows, MacOS, Android, and anything with a web browser and a mouse. Packaged in Debian and F-droid, and probably many other places.

I like it for time wasting in lines at the DMV, for a low-stakes game when anxious, and for falling asleep.

[–] kazerniel@lemmy.world 15 points 6 days ago

FanControl: superb PC fan manager with custom temperature/fan speed curves and the options to combine sensors whatever way you like

[–] unphazed@lemmy.world 12 points 5 days ago (3 children)

Learned about the mentos thing in 2006. Saw a list of things to flavor coke. This was #4 on the list and I decided to try it (yay mint coke) - at a dollar tree parking lot, in my car. Went off in my mouth and I maintained the pressure until I got the door open and my head out. Thankfully little mess on me or the car. Learned the internet can be full of sneaky assholes that day.

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[–] teuniac_@lemmy.world 16 points 6 days ago (1 children)

Logseq: note-taking and knowledge management application that supports Markdown and Org-mode syntax, featuring powerful linking, block-based organization, and full local data storage for privacy

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[–] Zerush@lemmy.ml 15 points 6 days ago* (last edited 6 days ago) (3 children)

MakeHuman is a 3D character creation software designed to simplify the creation of virtual humans through a graphical user interface. The software allows users to create realistic human characters by adjusting parameters like gender, age, height, weight, and ethnicity through slider controls. Characters can be customized with clothes, hair, poses, and materials from the built-in library and exported to 3D soft, like Blender.

https://static.makehumancommunity.org/makehuman.html

https://github.com/makehumancommunity/makehuman

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[–] callyral@pawb.social 11 points 6 days ago

aria2. From the website:

aria2 is a lightweight multi-protocol & multi-source command-line download utility. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink. aria2 can be manipulated via built-in JSON-RPC and XML-RPC interfaces.

[–] pseudo@jlai.lu 20 points 6 days ago (2 children)

Bookwyrm, a book tracker and review sharing plateform that is part of the fediverse allowing you to share your notes and review about books in the threadiverse as well as the twittoverse.

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[–] Deckname@discuss.tchncs.de 14 points 6 days ago

PairDrop like Localsend or Airdrop but working on anything that has an internet connection and a resonably new web Browser! You can share files even when on different networks, by pairing devices. Works like a charm.

[–] osugi_sakae@midwest.social 11 points 6 days ago

krename is another excellent, but not as well known as it should be, KDE app.

krename can rename files and directories, and directories recursively, to almost anything. You can rename:

  • using information from the files or about the files (image info, date / time info, etc)
  • with templates (like #### for incrementing 0001, 0002, 0003, etc)
  • by adding parts of the original file name (first three characters then the last 4 characters, for example)
  • using find and replace (spaces to underscore, remove special characters, etc), including regular expressions
  • by changing case

or with a mix of everything.

krename has a simple mode and an advanced mode for renaming, so you don't have to jump into the deep end with the features.

You do have to be careful with some of the file info functions - it will happily try to rename a movie or a pdf with (non-existent) image EXIF info, for example. That would result in a file with a name you did not intend.

Mihon Manga reader for android. Allows auto aggregation from web sources to make tracking and reading manga smooth and easy

[–] Zerush@lemmy.ml 19 points 6 days ago (2 children)

Portmaster, nowadays mandatory, monitor the traffic of all installed apps and even from the OS itself, blocking with a simple click all unwanted traffic, Inbuild DNS crypt with dynamic filterlists (customizable) blocking ads, trackers and unwanted crap from big companies. Optional SPN service (paid). Windows and Linux.

https://safing.io/

https://github.com/safing/portmaster

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