Evidence basis: Reviewed Eziriz's current features, integration, download and store pages. Competitor capabilities are vendor-documented; we did not run .NET Reactor on the downloadable samples.
Official sources and license details · Our measured output and compatibility evidence
What .NET Reactor is
.NET Reactor documents NecroBit method-body encryption, virtualization, renaming, strings and control flow. Listing these features does not establish a measured protection-strength ranking.
Eziriz provides local tools and integration options. FreeObfuscator processes uploaded assemblies on its server; its Pro HTTP API is a different deployment choice.
.NET Reactor pricing
.NET Reactor: Official store checked October 23, 2026: Single Developer US$249; Company US$549. Both are perpetual with one year of update support. Build-server support is excluded from Single Developer and included with Company. Listed prices exclude applicable VAT/GST; confirm terms with Eziriz.
Check the official purchase/store and evaluation sources below. An evaluation window, a perpetual license and its update/support period are different terms.
FreeObfuscator: free to use with no account. An optional Pro plan adds larger files, batch obfuscation, string encryption, control-flow obfuscation and an HTTP API for CI/CD.
Capabilities side by side
Competitor “Yes” means documented availability, not an independently tested result or inclusion in every license. Our “Paid tier” means Pro. “Not verified” is not “No”; CLI and build integrations are distinct from a hosted upload API.
| Capability | .NET Reactor | FreeObfuscator |
|---|---|---|
| Symbol renaming Vendor documentation Eligible names; compare actual output. | Yes | Yes |
| String encryption Vendor documentation Ours: Pro; runtime plaintext remains recoverable. | Yes | Paid tier |
| Control-flow obfuscation Vendor documentation Ours: Pro, with compatibility exclusions. | Yes | Paid tier |
| Method virtualization Vendor documentation Ours: Pro, marked supported methods; not equivalent coverage proven. | Yes | Paid tier |
| Method-body encryption / NecroBit Vendor documentation Different from string encryption or our method VM. | Yes | No |
| x86 native generation Vendor documentation Vendor documents target and method restrictions. | Partial | No |
| Anti-debugging Vendor documentation | Yes | No |
| Anti-tampering Vendor documentation Ours: optional VM-bytecode integrity check, not general assembly anti-tampering. | Yes | Partial |
| Product licensing / hardware locks Vendor documentation Our subscription is access to this service, not licensing for your application. | Yes | No |
| Local processing Vendor documentation Ours: uploaded assemblies are processed server-side. | Yes | No |
| Vendor IDE / pipeline integrations Vendor documentation Reactor documents CLI and integrations; build-server license scope applies. | Yes | No |
| Hosted HTTP upload API Competitor hosted API not verified from reviewed sources. CLI/CI support is documented. | Not verified | Paid tier |
Where .NET Reactor is strong
- Vendor-documented licensing system with license files and optional hardware locks.
- Documented CLI, IDE plugins and CI integrations.
- Local processing where uploading assemblies is not acceptable.
Where it costs you
- Commercial license scope matters: Single Developer does not include build-server support; Company does.
- x86 generation has specific conditions; validate the chosen protection and target combination.
- Evaluate correctness and performance on your own release build; we have not benchmarked this competitor.
Choosing between them
Choose .NET Reactor if
- You need local processing, a licensing subsystem or documented native/code-encryption features.
- You want the vendor's IDE or pipeline integrations and a license covering your build environment.
Choose FreeObfuscator if
- You can upload your assembly and want to inspect a free renaming result without installing a local tool.
- You want a hosted Pro HTTP workflow rather than adopting a local protection toolchain.
The verdict
Choose the workflow and features you can verify on your application. Reactor documents a broader local licensing/protection toolbox. FreeObfuscator offers hosted renaming and optional Pro transforms. Our downloadable samples establish our observed output and compatibility, not a head-to-head superiority result.
What to verify in your evaluation
- If you need license enforcement, evaluate trial expiry, hardware locking and license-file handling separately from symbol renaming. FreeObfuscator is not a product-licensing system.
- For CI, confirm license scope: the store includes build-server support with Company, not Single Developer. Documented CLI and pipeline integrations are different from a hosted upload API.
- Evaluate NecroBit, virtualization and x86 generation separately on the target deployment. Vendor-listed platform support does not prove that every protection combination applies to every target.
What we actually verified
These are FreeObfuscator-only results on self-authored .NET 8 examples. We have not produced Eazfuscator.NET or .NET Reactor outputs for these inputs. This evidence does not rank the products' protection strength or performance.
| Observed case | Result | Inspect or reproduce |
|---|---|---|
| Production Free library | 3 exported types and 24 reflection-contract entries match; the unchanged consumer passes ten checks. Accessors count separately; entries are not independent runtime tests. | DLL case · Source and binaries · Contract report |
| Production Free application | Managed application type/helper renamed; four launches via dotnet and the unchanged Windows apphost have identical output, with ten checks per launch. | Application case · Source and binaries · Launch report |
| Local Pro-transform example | 2,003 compared runtime results match the original; a selected UTF-16 plaintext literal is absent after string encryption. Local engine run, not a production paid-account or virtualization test. | Method and limits · Report |
Run a comparable trial
- Start from the same original release assembly, dependencies and consumer. Record each product version, license/evaluation mode and settings.
- Separate a basic renaming comparison from additional-layer tests. Select equivalent requirements rather than assuming similarly named switches transform the same methods.
- Inspect representative methods and strings with a decompiler; record preserved or skipped code. A changed hash or file size is not a strength score.
- Run the unchanged consumer or complete application, normal and exceptional paths, reflection and serialization tests. Also measure startup, hot-path latency and output size under a defined workload.
- Report failures and exclusions alongside successes. Our captured library is unsigned, and the application case covers Windows framework-dependent .NET 8; other deployments need their own validation.
Official sources reviewed October 23, 2026
- Reactor feature reference — NecroBit, virtualization, x86-specific generation, renaming, strings, control flow and anti-debugging.
- Product and integration overview — Anti-tampering, CLI, IDE plugins and pipeline integrations.
- Licensing-system documentation — License-file generation and optional hardware locking.
- Store and license scope — Single Developer/Company prices, update period and build-server entitlement.
- Platform downloads — Windows/macOS GUI and CLI, Linux CLI; demo distribution.
The linked pages document capabilities and licensing. We do not adopt claims of impossible decompilation, universal compatibility or relative speed without a reproducible test.
Worth knowing before you decide: what obfuscation actually protects against sets realistic expectations about how far any of these tools go.