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ATLAS Offline software
========================
Welcome to [ATLAS](https://atlas.ch) Athena software!
To contribute to this project, follow our [git tutorial](https://atlassoftwaredocs.web.cern.ch/gittutorial/). In particular, if you fork this project *please do not forget* to [add the ATLAS Robot as a developer](https://atlassoftwaredocs.web.cern.ch/gittutorial/gitlab-fork/).
For ATLAS members, please see the [Atlas Computing Twiki](https://twiki.cern.ch/twiki/bin/view/AtlasComputing/AtlasComputing) for even more information.
The following major branches are currently active:
Branch | Purpose | Main Project, Release Series
------------------------------------------------------------------| ---------------------------- | ---------------------------------------
[main](https://gitlab.cern.ch/atlas/athena/tree/main) | Upgrade, Analysis, Derivations | Athena 24.0.X, (Ath)AnalysisBase 24.2.X
[23.0](https://gitlab.cern.ch/atlas/athena/tree/23.0) | Run-3 Tier0, Point1, MCProd | Athena 23.0.X, AthSimulation 23.0.X, AthGeneration 23.6.X
[21.2](https://gitlab.cern.ch/atlas/athena/tree/21.2) | Legacy run 2 derivations | AthDerivation 21.2.X
Links
- The [ATLAS webpage](https://atlas.ch) will tell you all about the ATLAS experiment (for ATLAS members, the collaboration webpage is [here](https://atlas-collaboration.web.cern.ch/))
- The [Twiki](https://twiki.cern.ch/twiki/bin/view/AtlasComputing/AtlasComputing) is the main source of documentation, and has many links to sub-domains
- The [software documentation](https://atlassoftwaredocs.web.cern.ch) page is the main entry point for tutorials, etc.
- The git repository is [here](https://gitlab.cern.ch/atlas/athena)
- The [ATLAS Nightlies and CI page](https://bigpanda.cern.ch/globalview/) shows the build status of all nightlies
- The [Doxygen code documentation](https://atlas-sw-doxygen.web.cern.ch/atlas-sw-doxygen/atlas_main--Doxygen/docs/html/index.html) is available for the `main` branch
- To cite Athena, you can use the following zenodo [DOI](https://zenodo.org/record/2641997)