This is the first reference and handbook since the satellite era began, which describes and derives systematically the orbit theory with analytical solutions of the equations of satellite motion, with respect to all of the extraterrestrial and geopotential disturbances of the second order.
A project to create a mobile phone which tries to minimise the ecological footprint. Android is planned as operating system, but others (Firefox, Ubuntu) might be offered as well.
Simple, high-reliability, distributed software configuration management. An interesting DSCM system which is bases on a single executable (written in C), uses SQLite as repository and includes both a wiki and a ticket system. Not related to the Plan 9 file system of the same name. https://fossil-scm.org/home/doc/trunk/www/containers.md#security describes some ways to run fossil in a container for improved security. This link was found on the PiDP-11 mailing list https://groups.google.com/g/pidp-11/c/OQADvv-sCzU/m/J7zbwITWAgAJ
Ugarit is a backup/archival system based around content-addressible storage. This allows it to upload incremental backups to a remote server or a local filesystem such as an NFS share or a removable hard disk, yet have the system instantly able to produce a full snapshot on demand rather than needing to download a full snapshot plus all the incrementals since. The content-addressible storage technique means that the incrementals can be applied to a snapshot on various kinds of storage without needing intelligence in the storage itself - so the snapshots can live within Amazon S3 or on a removable hard disk. Similar to Plan 9's venti, but implemented in Chicken Scheme. Encrypting the backup store (called vault) is supported.
Hassle-free delivery of a multi-file Lisp program. A simple alternative to ASDF. From Dorai Sitaram, author of "Teach yourself Scheme in fixnum days", scm2cl, TeX2page and other interesting things.