Kyoto Tycoon vs OpenTSDB: What are the differences?
What is Kyoto Tycoon? A handy cache/storage server. Kyoto Tycoon is a lightweight database server with auto expiration mechanism, which is useful to handle cache data and persistent data of various applications. Kyoto Tycoon is also a package of network interface to the DBM called Kyoto Cabinet.
What is OpenTSDB? A scalable time series database. It is a distributed, scalable time series database to store, index & serve metrics collected from computer systems at a large scale. It can store and serve massive amounts of time series data without losing granularity.
Kyoto Tycoon and OpenTSDB can be categorized as "Databases" tools.
OpenTSDB is an open source tool with 3.81K GitHub stars and 1.11K GitHub forks. Here's a link to OpenTSDB's open source repository on GitHub.