PUBLIC MARKS with tags Erlang & google

Osmos provides on-disk ordered key-value tables for Erlang, based on a sort-merge machine with user-defined merging semantics. This allows a very high volume of updates to be handled efficiently while still supporting a variety of useful operations with transactional safety, e.g., adding to a counter, taking the union of sets, or simply replacing a record. Osmos is ideal for situations where updates are much more frequent than queries, for example, collecting statistics for reporting, and periodically generating reports.

Scalaris is a scalable, transactional, distributed key-value store. It can be used for building scalable Web 2.0 services.

plists is a drop-in replacement for the Erlang module lists, making most list operations parallel. It can operate on each element in parallel, for IO-bound operations, on sublists in parallel, for taking advantage of multi-core machines with CPU-bound operations, and across erlang nodes, for parallizing inside a cluster. It handles errors and node failures. It can be configured, tuned, and tweaked to get optimal performance while minimizing overhead.

Erlaws is a collection of client implementations of Amazon's WebServices offerings. Currently there are clients for S3, SQS and SDB.

Twoorl is an open source Twitter clone written in Erlang using the ErlyWeb framework

ErlMail is a complete email solution written in Erlang. It contains (or will contain) full RFC compliant SMTP, IMAP and POP clients and servers written in a modular fashion to allow others to use the modules in their own projects.