OpenTSDB - OpenTSDB is a distributed, scalable Time Series Database (TSDB) written on top of HBase.
Arctype - Free SQL Client for developers and teams. Available for Mac, Windows, Linux, and Web.
Reconnoiter - Reconnoiter is a monitoring and trend analysis system designed to cope with large architectures...
Numeracy - A SQL pad that gives you x-ray vision for your data
Thomson Reuters Datastream - Thomson Reuters Datastream is a financial time series database that allows to identify and examine trends, generate and test ideas and develop view points on the market.
QuestDB - QuestDB is the fastest open source time series database