Kasta

Self-hostable file sharing, link shortener, and text sharing platform written in C#.

PlatformWebfree

Kasta is a self-hostable file uploader, link shortener, and text-sharing platform written in C#, designed to work with any S3-compatible storage service. It supports media previews, ShareX config generation, per-user storage quotas, and both public and private uploads. It's built for self-hosters, including ShareX users, who want their own upload destination instead of a third-party host.

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Behind the summary, Matchbox keeps a richer profile of Kasta - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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