The best alternatives to Link Bubble are Firefox Preview, Flynx, and Clean Share. If these 3 options don't work for you, we've listed a few more alternatives below.
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Hurree— The smarter, simpler way to analyze your data
Firefox Preview combines the speed, privacy, control, and easy-to-use features you have come to expect from Firefox. Thanks to the GeckoView engine, Preview is 2x times faster than earlier Firefox versions with Always-on Tracking Protection plus Collections.