EVEMon Lives - New Maintainer, v5.1.0 Released

EVE Technology and Research Center Third Party Developers
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Hello All,

I’m Alia Collins, and I’ve taken over maintenance of EVEMon from Peter Han.

EVEMon is back and fully working. Rebuilt from the ground up on .NET 8.

What’s New in v5.1.0:

  • Migrated to .NET 8 - Modern framework, better performance, proper connection handling

  • ESI Best Practices - Proper rate limiting, caching, and error handling so your requests don’t get blocked

  • Catalyst Expansion SDE - All game data updated (December 2025)

  • Booster Simulation - See how boosters affect your training time in attribute optimizer

  • Better Status Bar - Shows exactly which API is refreshing next (e.g., “Skills: 00:02:45”)

  • New UI Experiments - Check out the About window (Help → About) for a preview of where the UI is heading

  • Auto-Update Notifications - EVEMon now checks for updates from the new repo

Stability Note: This is a major rebuild. Everything worked fine in my testing, but please expect some stability issues as we shake things out. Report anything you find.

Beta Channel: There’s also a rolling beta release for those who want the latest features. Expect high velocity updates as I get more time to work on this.

Download, extract, run. No installer.

Latest Stable: Release EVEMon v5.1.1 · aliacollins/evemon · GitHub
GitHub: GitHub - aliacollins/evemon: EVEMon - EVE Online character monitoring tool (.NET 8 fork)

Changelog:

v5.1.1 (Jan 5, 2026)

  • Fixed: Settings now save correctly between restarts
  • Fixed: Update notifications now work properly
  • Deprecated: Certificate Browser (use Ship Browser for Masteries)

Note: If you downloaded v5.1.0 earlier, please manually update - the update notification system was broken in that version.

o7

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Thank you!

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Thanks for your work.

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hey!

I’ve been keeping evemon alive for the last few years! Currently I have been waiting on steve to update his SDE conversion, but I have another option for the conversion which i havent had the chance to get to yet due to an irl injury.

Feel free to contribute back PRs!

1 Like
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Having some issues with this, I unisntalled my previous evemon and run this, i fire it up and get this message, i dont know why as i put the new evemon stuff in a new folder. I go on to open evemon and non of my ESI keys are there even though i added them all yesterday , gone back to 4.2.2. which works for me (althuogh the certificate option in it are incorrect)

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Having the same problem, it seems to be stuck with this.

Gonna go back to the old one until it looks like it fixed.