Dataclips allow the results of SQL queries on a Heroku Postgres database to be easily shared. Simply create a query on dataclips.heroku.com, and then share the resulting URL with co-workers, colleagues, or the world. The recipients of a dataclip are able to view the data in their browser or download it in JSON, CSV, XML, or Microsoft Excel formats
Expose your database (or any fine grained subset of it) to executives or business analysts (or any other non-technical personnel) for quick browsing and ad-hoc reports.
Atlantis Data Surf is a free animated SQL Database Visualization Tool which allows you to easily visualise complex schemas - use it to 'surf' through your data.
HTSQL was created in 2005 to provide an XPath-like HTTP interface to PostgreSQL for client-side XSLT screens and reports. HTSQL found its audience when analysts and researchers bypassed the user interface and started to use URLs directly. The language has evolved since then.