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.Net

blossom

Double entry plain text accounting for traders. For full documentation, go to the documentation home.

Blossom is a yet another plain text acount application cli similar to Ledger-cli, Hledger and Beancount. As with the other similar implementations:

  • blossom works locally, without interacting with webs servers, banks or the like, your data stays with you.
  • As it's plain text, you can store your files in whatever source control repository or document management system you like. I don't recommend storing them on github.com!
  • blossom only reads your data, it doesn't know how to write and won't smash up your data.
  • a small eco-system of helper utilities is in the planning (pretty-print, price import, etc - rather custom)
  • a VSCode extension is in developement, including support for a notebook.
  • will support reporting via REST services, so it is integratable into your own workflow

But this breaks IFRS Rule 123-R!

Yes. But then you should get a real accountant if you need to follow those rules to the letter. It tries to strike a balance between real accounting and common sense. You can raise a ticket if you like.

Does it work yet?

Yes and no. It works, but it doesn't do a whole lot and is not overly optimised, but currently performs well and can handle relatively large files from brokers. The below snapshot might convince you (or not) about the viability.

I am personally using this to capture my accounts, starting with 2020. Here's a statistics output snapshot (meta statistics) showing what's inside some of files so far:

Item Combined file
Range 2017-02-12 -> 2021-12-29
Transactions 5,030
Postings 7,119
Accounts 181
Commodities 172
Payees 446
Assertions 382
Prices 60,733

Platforms

blossom is using F# and .net core, so it runs cross-platform. I've verified this on Windows 10 and Ubuntu 20.04 LTS.

Can I contribute?

There's not much to contribute to right now, star the project and come back later.

Why is there another clone of ledger?

  1. I find that the other systems don't cater well for more advanced trading strategies such as options or futures, which large numbers of trading assets (100+ can soon accrue).
  2. My use of MS Money for the last 15 years didn't really cut it for trading and multicurrency handling; it's long dead and I needed another solution.
  3. I want to customize reports inside the app rather than have to write on top of results from others.
  4. I felt like a challenge!

Differences to others

After the initial accounting portions which are fairly standard across pta software (balance checking, validations, reporting etc), there is a focus on trading support:

  • Enhanced PnL reporting taking into account expenses, transfers, cross currency impact
  • Support for non-nav assets such as mtm futures
  • Possible future support for risk, stress reports (option evaluation, derivatives linkage to underlyings, volatility surfaces etc) for OTC products.

Most of the "standard" formatting works in blossom, although there some extra helpers and formatting supported to cut down on boilerplate and monotonous copy/paste. You can see some of the format ideas at the journal format page.

Plans

  1. Add more checks / validation
  2. Focus trading expanding features
  3. Add a VSCode extension for both editing and processing the data.

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