Jubler vs Maestra

Jubler is a free, open-source desktop editor for creating, revising and converting text-based subtitles. It runs on Linux, macOS and Windows and handles more than 20 subtitle formats, including SRT, ASS/SSA, WebVTT, TTML, ITT, DFXP and YouTube subtitles. Users can shift timing, convert frame rates, split or join entries and files, check spelling, and search and replace with regular expressions. A timeline with draggable subtitle blocks supports two-point synchronization. With VLC, Jubler can preview video and frames, show audio waveforms and let users edit subtitles during playback. Quality tools include configurable validation rules and TED guidelines checks. Translation mode supports Azure Translator, and command-line tools are available for batch work and automation. Downloads include builds for Apple Silicon and Intel Macs, Windows, Linux x86_64 and arm64, as well as a generic Java version. VLC is required for video preview and audio waveforms; ASpell is suggested for spell checking. Jubler is licensed under AGPL-3.0.

Maestra provides transcription, translation, subtitling, dubbing, and voiceover for audio and video, both on demand and in real time. It supports transcription and localization in more than 125 languages; transcripts include speaker detection, punctuation, and timestamps. Users can create or import timed subtitles, edit and translate them, and export formats including SRT and VTT. TXT, DOCX, PDF, and JSON are also listed. Maestra is available through the web, an API, and an extension. Integrations include YouTube, TikTok Ads, Zoom, Microsoft Teams, Slack, Zapier, OBS, vMix, and webhooks; several meeting and production integrations are listed for real-time transcription and translation. Monthly plans range from $12 a month for Pay As You Go to $79 a month for Premium, while one-time 60-credit subtitle and transcription options each cost $12 as a one-time purchase. There is no free plan, though a free trial is listed. Maestra says it encrypts data in transit and at rest.