How we compare

Honest head-to-head comparisons with the other .NET obfuscators, including the cases where they are clearly the better tool for what you are doing.

Read these sceptically. We make one of the products being compared. We have tried to be accurate and to say plainly where each competitor wins — but verify anything that matters with the vendor. Reviewed July 2026.

Open source vs ConfuserEx The strongest free .NET protector — and the highest setup cost. Read the comparison → PreEmptive Solutions vs Dotfuscator The commercial incumbent, with a deliberately limited free tier. Read the comparison → Eziriz vs .NET Reactor Deep protection including IL virtualization, at commercial pricing. Read the comparison → Redgate vs SmartAssembly Obfuscation bundled with production error reporting. Read the comparison → Open source vs Obfuscar Maintained, MSBuild-native renaming — configured in XML. Read the comparison →

The short version

FreeObfuscator does symbol renaming only. There is no string encryption, control-flow obfuscation, anti-debugging or anti-tamper. Several tools on this page do considerably more, and if you need that, you should use one of them.

What we offer instead is the absence of friction: no installation, no configuration file, no licence, and a working result in about a minute. For a great many projects renaming is the level of protection actually needed, and the deciding factor is how much effort it takes to adopt.

If you are weighing this up, read what obfuscation actually protects against first. Deciding how much protection you need is a better starting point than comparing feature tables.