# quickfix/quickfix

QuickFIX C++ Fix Engine Library

Repository: https://github.com/quickfix/quickfix
Canonical: https://ross.abutalabs.com/products/quickfix
Language: C++
License: NOASSERTION
License Family: other
Last push: 2026-05-20T20:18:17+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 83, release rhythm 51, longevity 100
- inputs: {"age_days": 4788, "days_push": 105, "days_rel": 116, "gap_med": null, "n_releases_24m": 1}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1982, forks 885 (observed 2026-08-28T04:06:01.853894+00:00)

## What it is
QuickFIX is a free, open-source C++ implementation of the FIX (Financial Information eXchange) protocol, serving as a full-featured messaging engine supporting FIX versions 4.0 through 5.0 SP2 and FIXT 1.1. It offers Python and Ruby bindings via SWIG, SSL/TLS support through OpenSSL, pluggable message stores and logging, and database-backed message storage with MySQL, PostgreSQL, and ODBC.

## Use cases
- connect to a broker or exchange using the FIX protocol
- build a FIX initiator or acceptor for electronic trading
- implement FIX 4.2 order entry in C++
- add FIX connectivity to a trading system with Python bindings
- store FIX messages durably in MySQL or PostgreSQL
- secure FIX sessions with SSL/TLS

## When to choose
- you need a battle-tested, production-grade FIX engine used by banks and trading firms
- you need broad FIX version support from 4.0 to 5.0 SP2 including FIXT 1.1
- you need C++ performance with optional Python or Ruby bindings
- you need cross-platform support on Windows, Linux, and macOS

## When to avoid
- you need FIX support for a language other than C++, Python, or Ruby
- you want a modern actively-redesigned API rather than a mature legacy codebase
- your project does not involve FIX protocol messaging at all

## Facets
- artifact type: library
- maturity: stable
- function: networking, serialization, cryptography, database-driver, logging
- domain: fintech, networking, developer-tools
- platform: cpp, windows, python, ruby, cross-platform
- tags: fix-protocol, fix-engine, trading, electronic-trading, messaging-engine, swig-bindings, openssl, financial-protocol, linux, macos

## Member repositories
- quickfix/quickfix (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:01.853894+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:03:56.406950+00:00, confidence not recorded.
  - readme: https://github.com/quickfix/quickfix (fetched 2026-08-28T04:06:01.853894+00:00, sha 43dcb55cb77d)
- Data as of 2026-08-30T08:39:29.467469+00:00.