MockForge vs TestFlows Machine

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

MockForge compared with TestFlows Machine
Detail	MockForge	TestFlows Machine
What it does	Open-source API mock server for multiple protocols	Run your programs deterministically. Record, replay, and branch your runs.
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	Not given
Pricing model	Freemium	Freemium
Pricing	Free: $0/month with 10,000 requests/month and local mocks only. Pro: $29/month with 250,000 requests/month, 100,000 platform AI tokens/month, and 3 hosted mocks. Team: $99/month with 1,000,000 requests/month, 1,000,000 platform AI tokens/month, and unlimited hosted mocks. Annual plans include 2 mont	Free: €0 with ₡3 credits included each month (about 20 vCPU-hours). Starter: €10/month with ₡25 credits (about 166 vCPU-hours). Plus: €25/month with ₡65 credits (about 433 vCPU-hours). Pro: €50/month with ₡150 credits (about 1,000 vCPU-hours). Dedicated: contact sales. Usage credits: €1 a credit, pu
Key features	Multi-protocol support (REST, gRPC, GraphQL, WebSocket, Kafka, MQTT and more) Realistic data synthesis with template tokens and faker fields Latency and fault injection for testing retries and fallbacks Record and replay for capturing and replaying live traffic Modern admin UI for managing servers, overrides and metrics Configuration as code with OpenAPI specs and YAML Local-first development without account requirement CI integration with local endpoints HTTP bridge exposing gRPC services over REST BYOK AI integration with user provider keys	Record runs with non-deterministic inputs pinned down Replay runs instruction-by-instruction Checkpoint and fork from any point Fault injection for disk, network, clock, containers and system calls Built-in debugger for machine programs Machine client and Python SDK Cloud storage for runs and disk images Multiple simultaneous sessions with configurable vCPUs Configurable session disk up to 256G
What makes it different	Multi-protocol mocking from one configuration file Realism-first simulation with data synthesis and failure injection Open source with permissive MIT or Apache-2.0 licensing Local-first approach with optional cloud collaboration Deploy to cloud hosting with a single command	Deterministic replay of program runs with identical outcomes Fork and branch from any point without losing original timeline Comprehensive fault injection testing built-in Pay-as-you-go usage credits with free plan available
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	9 no change since last check	2 no change since last check
Trust Flow (Majestic)	0	4
Citation Flow (Majestic)	17	21
Referring domains (Majestic)	7	27

5 details filled in for both companies.

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