The best replacement for inner tubes is butyl.

The best alternatives to inner tubes are rated as following:
★★★★★  butyl
★★★  tubeless

Your alternative for inner tubes is not listed? Suggest!
Speaking about inner tubes, one probably shouldn't forget about radial tires.

Other search terms related to inner tubes and their ratings are:
★★★★★ radial tires
You have in mind a companion for inner tubes and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of inner tubes in all years. Click on graph for more.
inner tubes
butyl
tubeless