| SQLSpaces | Blitz JavaSpaces | IBM TSpaces | |
|---|---|---|---|
| Version | 3.10.0 | 2.1.4 | 3.1 |
| Producer | Collide Research Group | private open source project | IBM |
| License | client LGPL / server AGPL | BSD license | free trial |
| primitive tuples | Yes | Yes | Yes |
| object-oriented tuples | Yes, with OTM | Yes | Yes |
| basic operations | Yes | Yes | Yes |
| blocking operations | Yes | Yes | Yes |
| callback support | Yes | Yes | Yes |
| expiration / leases | Yes | Yes | Yes |
| xml support | basic | XPath queries | |
| disjoint spaces | Yes | Yes | |
| transactions | Yes | Yes | Yes |
| connections to unified spaces | Yes | ||
| user management | Yes | Yes | |
| space-based rights | Yes | ||
| versioning | Yes | ||
| graphical investigation | Yes | Yes | Yes |
| access via interactive shell | Yes | ||
| animated realtime investigation | Yes | ||
| multilingual interface | C#, Ruby, Prolog, PHP | ||
| encrypted connections | Yes | Yes | |
| reverse structured naming | Yes | ? | |
| inverse fields | Yes | ? | |
| semi-formal fields | Yes | ? | Yes |
| wildcard fields | Yes | ||
| web service interface | Yes | ||
| XMPP tunneling possible | Yes | ||
| bounded queries | Yes | Yes | |
| persistency | Yes | Yes | basic |
If you think that the values of the other implementations are wrong, please inform us!