Throwback to the old ringtone-providers of the early 2000s
Visit www.blamba.de yourself to find out.
If you happen to have an old feature-phone with working cellular data, visit wap.blamba.de on it.
Blåmba is a modern, open-source re-implementation of the popular commercial ringtone and multi-media providers for cellphones back in the early 2000s.
If you weren’t around back then, many companies offered small little ringtones, screensavers, screen backgrounds, which you could directly download to your mobile phone (via SMS, WAP, early web browsers).
These services cost a lot of money and were often associated with very annoying advertisment and questionable business practices (subscriptions, etc.)
The technical side behind those ringtone providers proved to be pretty interesting, though. There are a number of very cool, innovative (at the time) standards involved and those can still be used today (even if documentation is sparse).
At the 38th Chaos Communication Congress I gave a talk explaining a lot of the technical background regarding WAP, WSP, GPRS, CSD, UDH and all those other wonderful cellular communication acronyms:
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