Due diligence
vespera CLI
Reads a dataroom on your own machine: findings, key metrics, contradictions between documents, thesis fit, and an indicative valuation range. Free and open source.
Free & open source
Read a dataroom without uploading it.
vespera is a free, open-source CLI that reads a dataroom, cross-checks its claims, and scores the deal against your investment thesis — with AI running locally on your machine, so confidential documents never leave it.
Free and open source, Apache-2.0 — install it, read the code, keep it forever.
Local-first by design: analysis runs on your machine, and your documents never leave it.
Reads contracts, decks, and financials — and flags where they contradict each other.
vespera in 60 seconds
The tool
Niche by design.
Open source
Built in the open.
Read the code, star it, fork it, ship a pull request — the whole tool is public.
Get vespera
Up and running in two commands.
vespera reads a dataroom, cross-checks its claims, scores it against your investment thesis, and suggests an indicative valuation range — with inference running locally on Ollama. No account, no cloud upload, no third-party AI provider.
# install
pip install vespera
# review a dataroom against your thesis
vespera review ./dataroom --thesis my-thesis.md
Not a terminal person? A one-click desktop version is on the way — star the repo on GitHub to follow along.
See it in action — the full 3-minute demo on a real dataroom
How it works
Free is the business model.
01
Build
We build the tools we kept wishing existed on real due-diligence engagements — starting with vespera, a CLI that reads a dataroom and cross-checks its claims.
02
Give away
Every tool is free and open source. No accounts, no tiers, no cloud upload — inference runs locally, so confidential deal documents stay on your machine.
03
Sustain
Paid integration and advisory work around the tool funds its development. The tool itself never gains a price tag.
Where we sit
Two ways to read a dataroom. We build for the fast one.
Every deal turns on the same moment: a dataroom opens and someone has to read it. In most firms that means weeks of manual review under deadline. vespera reads the same room locally, in minutes — cross-checking claims and surfacing what a tired reader misses — so the contradictions are on the table before you commit. Vespera Systems builds free, open tools for that moment.
Diligence today
Weeks of reading, by hand
Dataroom opens
Hundreds of documents land — contracts, accounts, decks, cap tables — days before a decision.
Associates and counsel
Teams skim under deadline. Cross-checking claims across documents is the first thing squeezed.
A findings memo
Built by hand, late in the process, with the contradictions that slipped through.
Around every deal: VCs, PE firms, corporate finance and law firms — all reading the same room against the same clock.
Diligence with vespera
Minutes, on your machine — our focus
The same dataroom
Pointed at vespera on your own machine — no upload, no account, no third-party AI provider.
vespera, locally
A free, open-source CLI running local models via Ollama. Confidential documents never leave the laptop.
Structured findings
Key metrics, contradictions between documents, thesis fit, and an indicative valuation range.
Vespera
Free, open-source tools for the moment the dataroom opens. Get the tool on this page — Apache-2.0, and it stays that way.