[rahoulb]

I've not looked at Linear - but when I was freelancing I used Pivotal (free account) to just put all my clients' requests into one long queue (I had about 8 clients at any one time).

I put in a very random guess as to the points value of each request - nothing more than "trivial, easy, difficult, bastard-bloody-hell-shit-buckets-difficult".

I had Tracker set to work in "weekly sprints" - but they're not really sprints at all - it's just a unit of measure. Internally it averages the number of points completed over the last three weeks, uses that for an average velocity, then moves the date markers on the "backlog" list to match.

Then, when a client asked when something will be done, I could pretty accurately say "unless something urgent crops up, it will be '18th-24th March'" (where "something urgent crops up" means I insert a story at the top of the queue instead of at the end).