Buzz: Popular open-source desktop app that transcribes and translates audio offline on your own computer using OpenAI's Whisper. Klang: Swedish AI meeting transcription and conversation-intelligence platform with EU-hosted, GDPR-aligned processing and its own European speech models. Which one wins depends on your platform mix, budget, and how hands-off you want notes to be.
How Hosiqo compares and tests toolsFinal recommendation
Shortlist Buzz when transcribing recorded meetings, interviews, podcasts, or lectures offline matters most, and Klang when documenting interviews and investigations where verified transcripts are required (legal, audit, insurance, research) matters most. Run both through a week of actual calls to see which suits your workflow.
Popular open-source desktop app that transcribes and translates audio offline on your own computer using OpenAI's Whisper.
Swedish AI meeting transcription and conversation-intelligence platform with EU-hosted, GDPR-aligned processing and its own European speech models.
Buzz is a widely used open-source desktop application that transcribes and translates audio offline on the user's personal computer, powered by OpenAI's Whisper. It is MIT-licensed and actively maintained, with v1.4.4 released in March 2026, and it has grown a large community with roughly 19.7k GitHub stars. Buzz runs on macOS, Windows, and Linux, with installation options including Flatpak, Snap, and PyPI. It supports both importing existing audio and video files and real-time transcription from microphone input, and it can export results in formats such as TXT, SRT, and VTT for subtitling and documentation. The app includes an advanced transcript viewer with search and playback controls, a watch folder for automatically transcribing new files, and a command-line interface for automation. It offers GPU acceleration through CUDA for Nvidia cards, Apple Silicon support, and Vulkan for many other GPUs, which makes faster transcription practical even on laptops. Buzz also provides speaker identification and speech separation for noisy audio, plus a plugin system that adds capabilities like AI-generated summaries. Because all processing happens locally, recordings and transcripts remain on the user's machine rather than being uploaded to a cloud service. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Klang is an AI transcription and conversation-intelligence platform developed and operated by Klang AI AB, headquartered in Helsingborg, Sweden. The company positions itself as European AI built in Sweden, running its own models that are adapted to European data-protection requirements, with EU-based data storage options and per-user encryption. Klang captures meetings, interviews and conversations and turns them into searchable, structured records: it transcribes with speaker identification, supports manual error correction and advanced editing, and generates summaries, decision items and action items automatically. A daily-briefing capability surfaces patterns and insights drawn from multiple conversations, and the platform makes prior discussions searchable so teams can revisit decisions. Klang is available as a web application and mobile apps, and connects to a range of workplace tools including Slack, Zoom, Google Workspace and Microsoft Teams. It is marketed toward sectors that require verified transcripts and compliance documentation, such as insurance claims investigation, legal firms, audit teams, research institutions and social services. The product is actively operating in 2025/2026 with a published team and live web and mobile applications. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Buzz is a free tier with paid upgrades (freemium); Klang is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Buzz | Klang |
|---|---|---|
| Core capability | Offline transcription and translation using OpenAI's Whisper | High-precision transcription with automatic error correction and speaker identification |
| Standout feature | Real-time transcription from microphone input | AI-generated summaries, decision items and action items |
| Team usage | Speaker identification and speech separation for noisy audio | Daily briefings highlighting patterns and insights across conversations |
| Integrations | Exports to TXT, SRT, and VTT | Searchable conversation history |
| Languages & capture | Watch folder for automatic transcription and a command-line interface | Integrations with Slack, Zoom, Google Workspace and Microsoft Teams |
| Best-fit workflow | GPU acceleration via CUDA, Apple Silicon, and Vulkan | Web and mobile (iOS/Android) apps |
Buzz
Choose Buzz if you need transcribing recorded meetings, interviews, podcasts, or lectures offline — strengths include fully offline so audio and transcripts stay on the user's computer.
Klang
Choose Klang if you need transcribing and summarizing internal and client meetings for swedish and eu teams — strengths include european-built with its own models tuned to eu data-protection requirements.
Buzz
Klang
It depends on your workflow. Buzz is strong for transcribing recorded meetings, interviews, podcasts, or lectures offline, while Klang is strong for transcribing and summarizing internal and client meetings for swedish and eu teams. Both transcribe and summarize meetings.
Buzz is a free tier with paid upgrades and Klang is a free tier with paid upgrades. Check each vendor's pricing page for the latest plans and free-tier limits.
Often yes: teams combine tools when one handles capture and another handles analysis.
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