PUBLIC MARKS with tags concurrent & google

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.

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.