Ive been using darcs recently for some Haskell-related revision control tasks, as its the revision control tool of choice for the Haskell community (no surprise; its the most widely used Haskell program in existence). However, I cant say Iv

Comments on some of the newer open source Software Configuration Management (SCM) Systems

monotone is a free distributed version control system. it provides a simple, single-file transactional version store, with fully disconnected operation and an efficient peer-to-peer synchronization protocol. it understands history-sensitive merging, light

A petition to bring back the HP15C scientific calculator. Note that HP produced the limited edition of the HP 15C (2011?)

Augmenting Hardware Design with Functional Languages. A series of functional languages for hardware design. Confluence and HDLcaml (sp?) were based on OCaml, the newest called "Atom" is based on Haskell.

A toolkit to work on PDF documents. From the page: "If PDF is electronic paper, then pdftk is an electronic staple-remover, hole-punch, binder, secret-decoder-ring, and X-Ray-glasses."

Lots of information about photography (analogue and digital), including discussion about eye sensitivity.

A free (GPL) program to compute impedances and coupling factors of transmission lines with fairly complex geometries.

A neat CGI interface to calculate the geomagnetic field. Off-line versions of the program are available too.

From the page: Still not sure what BitScope is? BitScope is a built and tested (and previously build it yourself DIY), open design, digital storage oscilloscope and logic analyzer (also, digital sampling oscilloscope, mixed signal oscilloscope).