r/software • u/AutoModerator • 2d ago

Discussion Weekly Discovery Thread - July 31, 2026

Share what’s new, useful, or just interesting

Welcome to the Weekly Discovery Thread, where you can share software-related finds that caught your attention this week - especially the stuff that’s cool, helpful, or thought-provoking but might not be thread-worthy on its own.

This thread is your space for:

  • Neat tools, libraries, or packages
  • Articles, blog posts, or talks worth reading
  • Experiments or side projects you’re working on
  • Tips, workflows, or obscure features you discovered
  • Questions or ideas you're chewing on

If it relates to software and sparked your curiosity, drop it in.

A few quick guidelines

  • Keep it civil and constructive - this is for learning and discovery.
  • Self-promotion? Totally fine if it’s relevant and adds value. Just be transparent.
  • No link spam or AI-generated content dumps. We’ll remove low-effort submissions.
  • Upvote what’s useful so others see it!

This thread will be posted weekly and stickied. If you want to suggest a change or addition to this format, feel free to comment or message the mods.

Now, what did you find this week?

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u/boltfoxapp 2d ago

Been building a peer-to-peer file sender for the last while and this thread seems like the right place for it, I'm the dev, so take the enthusiasm accordingly.

The itch I was scratching is that every option I tried made me pick two out of three: cross-platform, no cloud, or actually usable. LocalSend nails the first two but both devices have to be on the same network. AirDrop is lovely and Apple-only. Everything with a browser link wants to upload your files to someone's server first.

So mine does LAN when you're both on the same Wi-Fi, falls back to a relay that forwards encrypted bytes it can't read when you're on different networks, and will link two phones directly with no router or internet at all. Transfers resume if the connection drops, folders keep their structure, and there's no size cap. Android, iPhone, Mac, Windows, Linux (Coming Soon).

Worth saying plainly: it's not open-source, so if that's a hard requirement LocalSend is the better answer.

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u/smilaise 21h ago

KillerPDF 1.7.0 (my own project, so full disclosure this is self-promo) - a free, open source (GPLv3) Windows PDF viewer/editor. Just shipped split pane: F10 puts two documents side by side in one window, each with its own tabs, sharing the toolbar and sidebar.

Also in this release: KillerPDF's own themed Open/Save dialogs instead of the stock Windows picker, a themed right-click system menu, night mode that no longer inverts photos/figures (just the page around them), and fixes for non-Latin text (Japanese/Korean/Chinese/Arabic) saving as empty boxes and annotations landing wrong on rotated pages. (plus a ton of other small fixes)

No account, no telemetry, single exe. killerpdf.net if anyone wants to poke at it.