Free local-first desktop app
Download SIERRA
Download the free, local-first OSINT workspace for evidence, notes, relationships, and timelines. No account is required for local use.
No account required
Case files stay local
Included locally
The complete working case.
Build, revisit, and move the investigation without buying a Cloud plan.
01
Evidence and relationship workspace
02
Local invokers and MCP tools
03
Time-aware connections
04
Obsidian import and export
Optional cloud
Add remote execution only when it helps.
SIERRA Cloud plans add AI Assistant access and monthly cloud tokens. The desktop workspace stays free.
Responsible use
Lawful, authorized use only. Demos are fictional; users are responsible for permissions and compliance. Details.
Product updates
Keep up with SIERRA.
Release notes and meaningful product updates. Nothing else.
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