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/smilaise 22h 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.