Quick Summary

Willow Voice is a VC-backed, polished voice dictation service with enterprise customers and a focus on accuracy. Tambourine is an open-source alternative that gives you full control: self-host on your infrastructure, choose from 10+ STT/LLM providers, customize formatting prompts, or run fully local with Whisper + Ollama.

Feature Comparison

FeatureTambourineWillow Voice
Open SourceYes (AGPL-3.0)No
Self-HostableYes (Docker available)No
Choose STT Provider10+ optionsFixed
Choose LLM Provider10+ optionsFixed
Custom PromptsFull controlLimited
Local/Offline ModeWhisper + OllamaCloud-based
Windows SupportYesYes
macOS SupportYesYes
Enterprise FeaturesSelf-managedTeam vocab, support
Auto-Learning DictionaryManual dictionaryLearns over time

Why Choose Tambourine

Full Source Access

Audit the code, understand exactly what's happening with your voice data, contribute improvements.

Self-Host Everything

Run on your own infrastructure. Your voice data never leaves your network if you choose.

Choose Your Models

Pick from 10+ STT providers and LLM providers, or run fully local with Whisper + Ollama.

Customize Prompts

Full control over how your speech is formatted. Modify filler word handling, punctuation, and more.

Try Tambourine

Open source and free to self-host.

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