update README

README.md

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 # Fedora Rust SIG
 
+## Active projects
+
+This organization hosts projects related to the Fedora Rust SIG:
+
+- [sig-leaves]: Script for analyzing Rust SIG packages for leaf status (Python)
+- [rust-update-set]: Tool to simplify the process of updating a set of Rust packages (Python)
+
+[sig-leaves]: https://forge.fedoraproject.org/rust/sig-leaves
+[rust-update-set]: https://forge.fedoraproject.org/rust/rust-update-set
+
+## Adjacent projects
+
+Some projects related to Rust packaging that are not specific to Fedora are
+maintained under the [rust2rpm][rust2rpm-org] organization on [codeberg.org]:
+
+- [cargo-rpm-macros]: Collection of RPM macros for Rust packages (RPM macros, Lua)
+- [cargo2rpm]: Translation layer between cargo and RPM (Python)
+- [rust2rpm]: Automatically generate RPM spec files for Rust crates (Python)
+- [rust2rpm-helper]: Helper program for rust2rpm (Rust)
+- [python-rustcfg]: Rust cfg expression parser (Python)
+- [obs-service-rust2rpm]: OBS Source Service to auto-generate packages for Rust crates (Python)
+
+[rust2rpm-org]: https://codeberg.org/rust2rpm
+[codeberg.org]: https://codeberg.org
+[cargo-rpm-macros]: https://codeberg.org/rust2rpm/cargo-rpm-macros
+[cargo2rpm]: https://codeberg.org/rust2rpm/cargo2rpm
+[rust2rpm]: https://codeberg.org/rust2rpm/rust2rpm
+[rust2rpm-helper]: https://codeberg.org/rust2rpm/rust2rpm-helper
+[python-rustcfg]: https://codeberg.org/rust2rpm/python-rustcfg
+[obs-service-rust2rpm]: https://codeberg.org/rust2rpm/obs-service-rust2rpm
+
+## Archived projects
+
+Some obsolete projects were migrated from the `fedora-rust` organization on
+pagure.io for archival purposes:
+
+- [modularity-utils]: Tooling for leveraging Modularity for Rust package builds
+- [sig-archive]: SIG documentation and archived meeting notes
+
+[modularity-utils]: https://forge.fedoraproject.org/rust/modularity-utils
+[sig-archive]: https://forge.fedoraproject.org/rust/sig-archive
+
+## Contact
+
 - Matrix: <https://matrix.to/#/#rust:fedoraproject.org>
 - Mailing List: <mailto:rust@lists.fedoraproject.org>