An independent software studio
Tools for bookkeeping, tax workpapers, and planning. Built by a practicing CPA, for people working alongside AI.
Free desktop tools. Early-access platforms. Real accounting work.
The agent prepares. You review.One binder, with the open items still in view.
↗Actual LedgerPDF v0.2.1 screen · fictional demonstration engagement
01 / Available to download
Start with the work in front of you.
Both desktop apps are free and open source.
Tax workpapers
Assemble source documents, add tick marks and calculator tapes, and tie out the work in a portable PDF. Work by hand or let your AI assistant prepare a first pass in the same binder.
Bookkeeping & close
Import transactions, make adjustments, and work through the close from one trial balance. Keep the books in an encrypted local file, with explanations and review status beside each balance.
02 / Early access
For a whole firm or your own businesses.
Explore each product's access options.
Firm workspace
For CPA firms
A shared workspace for a firm's books, documents, and client work, with AI agents helping move the work forward and the professional directing the process.
Explore early access
Books for your businesses
For people running multiple businesses
Separate books for each business, one familiar place to work. Bring your own AI agents to help with receipts, entries, and questions about the numbers.
Self-hosting is planned; the source release is still in preparation.
Explore early accessStill on the workbench
These projects are in development.
Tell us what you would like to try.
ProjectionLedgerTax planning · In developmentMulti-year tax projections for CPAs, with scenario comparisons and the calculations behind each result.
Ask about ProjectionLedger
Tax Prep LedgerReturn workpapers · In developmentSource-document support and tie-outs for an S-corporation and owner 1040, alongside your existing tax software.
Ask about Tax Prep Ledger
NTLedgerMeeting notes · In developmentA bot-free meeting notetaker for accountants, designed around on-device capture and notes organized by engagement.
Ask about NTLedger
DuovisoryAdvisor + CPA collaboration · In developmentA shared workspace for a financial advisor and CPA serving the same household, with context, conversations, and responsibilities in one place.
Ask about Duovisory
03 / The person behind the tools
I run a CPA practice, build with AI, and keep finding parts of the work that could be better. Ledger Labs is where I turn those problems into software.
I care about the details: a number you can trace, a binder you can hand off, a set of books you can actually review. That's where these tools start.
More about CharlieBuilt around accounting workflows and the people doing them.
Useful agent access, with the professional directing the work.
04 / From the release notes
Optional AI account suggestions, saved import reviews, and recovery checkpoints help you pick up where you left off.
Read release notesGuarded crash recovery for review marks, notes, calculator tapes, and journal work, with a choice before saving recovered changes.
Read release notesA few practical questions
LedgerPDF and LedgerTB have public downloads for macOS and Windows. LedgerPDF is alpha software. LedgerClaw and LedgerBug offer early-access paths on their own sites. The other projects are in development, and you can email us about participating in a pilot.
Yes. LedgerPDF is free and open source under GPL-3.0, and LedgerTB is free and open source under MIT. Each product's site has downloads, source links, and installation details. Availability and pricing for early-access products are handled on their own sites.
LedgerPDF and LedgerTB include MCP connections for compatible AI assistants. LedgerPDF lets an agent work in the binder you review. LedgerTB provides per-book read, propose, and post access levels. LedgerBug supports agent access through MCP and its API. Features and permissions differ by product; the professional remains responsible for the work.
LedgerPDF stores binders locally, and LedgerTB keeps its books in an encrypted local file. Optional AI features or a connected AI client may send selected content to the provider you choose. Local storage does not mean every connected service runs locally. See each product's data practices for the details.
Ledger Labs LLC is the independent software studio of Charlie Barmore, CPA, CFE, CVA. Charlie runs a CPA practice and builds tools informed by his own accounting work. Ledger Labs builds software; tax, bookkeeping, and AI-adoption advisory services are provided separately through Charles J Barmore CPA PC.
Keep in touch
Tell us about the tool you want to try, a workflow that needs attention, or something we could build better.
These links open your email app.
You can also write to info@ledgerlabs.co.