Because none of the available web interfaces to the IMS Open Corpus Workbench was right for hosting the COW web corpora, I started working on a bespoke interface called Colibri². It is really a spare-time project, and I do not release the code because I consider it trivialware.

Its core features are:

• designed mainly for exporting concordances to end-user’s machines (after preview)
• as simple as possible in terms of installation and use
• simple query mode with translation to CQP syntax, ideal for learning CQP syntax
• works in distributed mode: arbitrarily many machines can host/query corpora
• results from corpora which come in many “slices” are aggregated
• no SQL required (just Apache, PHP, CWB)
• user management
• planned optional features (word statistics, collocations, etc.) use SQL

It is running at webcorpora.org.