The best alternatives to Optimal.com blocker are Opera, Cloak VPN, and AdGuard Pro. 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
AdGuard is the best way to get rid of annoying ads and online tracking and protect your computer from malware. Make your web surfing fast, safe and ad-free
Adblock Fast is a new, faster ad blocker and the first open-source ad blocker for iOS (http://appadvice.com/appnn/2015/09/adblock-fast-is-a-free-and-open-source-way-to-banish-ads-in-ios-9)!
Just as webpages grew bloated with ads, so too have ad blockers grown bloated with little-used filtering rules and features that sap their speed and hog your device’s disk space, CPU cycles, and memory.
Cookie Blocker is a Safari extension that allows you to block cookies sites per site. Safari has a cookie blocking settings, but does support per site customisation. Cookie blocker was born to add in site customisation.