Batfish vs Tessabyte

Batfish is an open-source tool for analyzing network device configurations and validating network behavior. It works from configuration files, so core analysis does not require direct access to network devices. Teams can inspect deployed configurations and check planned changes before deployment. Checks cover undefined references, MTU and AAA settings, template compliance, sensitive-service reachability and expected traffic paths. Batfish can test whether end-to-end reachability survives any single-link or single-device failure, compare current and planned reachability, assess ACL or firewall changes and evaluate functional equivalence across vendors. Pybatfish provides a Python 3 SDK, and example Jupyter notebooks are available. An all-in-one Docker container bundles Batfish and notebooks. It runs on operating systems supporting Docker. Documented support includes Arista, AWS, Azure, Cisco, Juniper, Palo Alto Networks and SONiC, while Aruba, Dell Force10 and Foundry have limited support.

Tessabyte measures performance on wired and wireless networks, including speed, packet loss, and jitter. Listed uses include Wi-Fi speed tests, network capacity tests, link quality analysis, stress tests, QoS assessment, and SLA verification. It tests across LAN and Wi-Fi using IPv4, IPv6, TCP, and UDP. Results can chart uplink and downlink speeds, packet loss, and jitter; users can customize payloads and generate reports. The software has client and server components, and multiple clients can connect to one server. The server component is free and can be installed on unlimited Windows, macOS, or Linux machines. Its evaluation version is fully functional for 30 days from first execution. Client licenses are one-time purchases: the 1-user license is $39 as a one-time purchase, and licenses are also listed for three, five, ten, and 25 users. Each Windows or macOS client user license allows installation on up to three personal machines, and one license is required per user. Purchases include technical support and software updates for one year; the license remains usable afterward, with upgrades available separately. Tessabyte is self-hosted, and its maker describes it as intended for professionals who have outgrown iPerf.