OpenGrep vs Scapy
OpenGrep
github.com
Scapy
scapy.netSide by side
| Figure | OpenGrep | Scapy |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | Yes | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Network Protocol Analyzers | 8.6 (#5) | 8.3 (#6) |
| Documentation | The repository links a wiki with tutorials and language guides, including intrafile tainting, higher-order functions, C#, PHP and Visual Basic. | The project provides online documentation with installation instructions, usage guides, troubleshooting, and an API reference. |
| Installation | The official installer supports Linux and macOS through install.sh and Windows through PowerShell install.ps1. | The latest release can be installed with pip install scapy, and it can also run from the run_scapy or run_scapy.bat scripts without installation. |
| License | The repository identifies OpenGrep as a fork of Semgrep under the LGPL 2.1 license. | Scapy’s code, tests, and tools are licensed under GPL v2. |
| Purpose | OpenGrep is an open-source static code analysis engine for finding security issues and searching code patterns. | Scapy is a Python program for sending, sniffing, dissecting and forging network packets. |
Plans
In their own words
OpenGrep
OpenGrep is a free, open-source static analysis engine for finding security issues and searching patterns in source code. It runs on Linux, macOS, and Windows, with self-hosted deployment. The project supports more than 30 languages, including Python, Java, JavaScript, Go, Rust, PHP, and Visual Basic, and existing Semgrep rules and rulesets work without changes. Its intrafile taint analysis tracks constructor and field assignments, flow between methods, higher-order functions across 12 languages, and collection operations such as map, filter, and reduce. OpenGrep produces JSON and SARIF output and documents a CI subcommand for workflow use. The project distributes self-contained binaries and says releases are signed with Cosign. OpenGrep is a Semgrep fork under the LGPL 2.1 license. The security policy requests vulnerability reports by email and lists only the latest version as supported.
Scapy
Scapy is a free Python packet manipulation program and library for forging or decoding packets, sending and capturing them, and matching requests with replies. It can run as an interactive shell or be used as a library. Listed tasks include scanning, tracerouting, probing, unit tests, attacks and network discovery. Users can set arbitrary field values and stack protocol layers rather than rely on predetermined templates; after a probe, Scapy returns full decoded packets before interpretation for further analysis. It can read and store pcap files, inject invalid frames and custom 802.11 frames, and be extended with protocols and add-ons. Scapy runs on Linux, macOS, BSD and Windows, though Windows installation requires Npcap. Optional plotting needs Matplotlib; TLS decryption and PKI operations need the cryptography package. The code, tests and tools use GPL v2, while the documentation uses CC BY-NC-SA 2.5. Documentation includes installation instructions, usage guides, troubleshooting and an API reference. The project supports only its latest master version, and critical bugs should be reported privately through GitHub’s security tab.