Software Alternatives, Accelerators & Startups

Speechius VS Thunderbird

Compare Speechius VS Thunderbird and see what are their differences

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Speechius logo Speechius

The teleprompter that listens - your script follows the words you say

Thunderbird logo Thunderbird

Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
  • Speechius Your script scrolls when you speak
    Your script scrolls when you speak //
    2026-07-30
  • Speechius Always see where you are in the script
    Always see where you are in the script //
    2026-07-30
  • Speechius Fits any window and stays on top
    Fits any window and stays on top //
    2026-07-30
  • Speechius Skip words and trigger slides
    Skip words and trigger slides //
    2026-07-30
  • Speechius On-device, one-time purchase, macOS and Windows
    On-device, one-time purchase, macOS and Windows //
    2026-07-30

Speechius is a desktop teleprompter that scrolls when you speak. Speech recognition runs entirely on device and matches what you actually said against your script, so the text moves at your pace instead of a fixed speed. Pause and it waits. Go off-script and it catches up on its own.

It is not a dictation tool: nothing is transcribed into a document. Your script stays your script, and the app only decides how far you have got.

What it does

  • Follows your voice word by word along a focus line you place yourself
  • Floats above any application, so it works with Zoom, Meet, Teams and OBS rather than inside one recorder
  • Can be excluded from screen sharing and screen recording, so your audience sees only your slides
  • Resize the window freely; the focus line stays where you put it
  • Adjustable transparency, so you keep an eye on what is behind the script
  • Mark words to skip, for names the recognizer never gets right
  • Mark trigger words that advance your slides automatically
  • Pin the window so it always stays on top

Who it is for

People who record screencasts and tutorials, run webinars and online classes, or rehearse conference talks, and who want to sound spoken rather than read.

Practical details

macOS 13 or newer and Windows 10/11. Recognition in English and German. One-time purchase, no subscription, with a 14-day trial that starts with your first recognition session.

  • Thunderbird Landing page
    Landing page //
    2021-10-16

Speechius

$ Details
paid Free Trial โ‚ฌ30.0 / One-off (Pro)
Platforms
MacOS Windows
Release Date
2026 July
Startup details
Country
Germany
City
Tubingen
Founder(s)
Jay Imdahl
Employees
1 - 9

Thunderbird

Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

Speechius features and specs

  • Voice-following scroll
    The script moves only when you actually say the next words. Pause and it waits.
  • On-device speech recognition
    Apple Speech on macOS, a bundled Vosk model on Windows. Nothing leaves your machine.
  • Recognition languages
    English and German
  • Hidden on screen share
    The window can be excluded from screen sharing and screen recording.
  • Anchor line
    Drag the focus line to where you read; the text balances around it.
  • Window transparency
    Adjustable, so you keep an eye on what is behind the script.
  • Always on top
    Pin the window above any application, including Zoom, Meet, Teams and OBS.
  • Skip words
    Mark names the recognizer never gets right so they are ignored.
  • Slide triggers
    Mark words in your script that advance your slides automatically.
  • Licence
    One-time purchase, no subscription, 14-day trial.

Thunderbird features and specs

  • Free and Open Source
    Thunderbird is completely free to use and its source code is open to the public, allowing for community-driven development and transparency.
  • Customization
    The application supports a variety of extensions and themes, enabling users to personalize their email client according to their preferences.
  • Cross-Platform
    Thunderbird is available on multiple operating systems including Windows, macOS, and Linux, providing flexibility for users on different platforms.
  • Robust Security
    Thunderbird offers strong security features such as built-in phishing protection, spam filters, and support for S/MIME and OpenPGP for encrypting email messages.
  • Integrated Calendar
    The Lightning extension allows for efficient scheduling and includes calendar features directly within the email client.

Possible disadvantages of Thunderbird

  • Performance Issues
    Some users report that Thunderbird can become sluggish, particularly when handling large email archives or multiple accounts.
  • Less Intuitive UI
    The user interface can seem dated and may not be as intuitive or sleek compared to other modern email clients.
  • Limited Mobile Support
    Thunderbird does not have an official mobile app, causing inconvenience for users who need access to their emails on the go.
  • Dependency on Extensions
    While customization is a strength, relying on extensions for key features can sometimes lead to compatibility issues, especially after updates.

Speechius videos

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Thunderbird videos

Thunderbird Review Holiday World Launched Wing Coaster

More videos:

  • Review - Here's Why the 2002 Ford Thunderbird Was a Retro Failure
  • Review - MotorWeek | Retro Review: 1989 Ford Thunderbird SC (Update)

Category Popularity

0-100% (relative to Speechius and Thunderbird)
Productivity
100 100%
0% 0
Email
0 0%
100% 100
Screen Recording
100 100%
0% 0
Email Clients
0 0%
100% 100

Questions & Answers

As answered by people managing Speechius and Thunderbird.

What makes your product unique?

Speechius's answer

It recognises the words you actually say and finds them in your script, rather than scrolling on a timer or reacting to how loudly and quickly you speak. That means it still follows you when you rephrase a sentence, skip a line or jump back.

Recognition runs entirely on your own device, and the window can be excluded from screen sharing and screen recording.

Why should a person choose your product over its competitors?

Speechius's answer

Several teleprompters advertise voice-controlled scrolling, but most of them track your speaking pace and volume: they speed up when you speak faster and stop when you go quiet. They do not know which words you said, so going off-script or jumping back confuses them.

Speechius matches the recognised words against your script, which is the part that keeps working when you stop reading and start talking. It is also a one-time purchase rather than a subscription, and nothing is sent to a server.

How would you describe the primary audience of your product?

Speechius's answer

People who speak to a camera or an audience while their script has to stay out of sight:

  • Creators recording screencasts and tutorials
  • Trainers and teachers running online classes and webinars
  • Speakers rehearsing conference talks

Typically solo, on their own machine, without a studio setup.

What's the story behind your product?

Speechius's answer

I record programming tutorials for my own YouTube channel, and neither option worked for me: reading from a script sounds read, and improvising means losing the thread until a ten-minute recording takes forty. Existing teleprompters scroll at a fixed pace, so I ended up chasing the text instead of explaining.

I built the thing I wanted, and it turned into my first own product, released in July 2026.

Which are the primary technologies used for building your product?

Speechius's answer

  • Flutter for the user interface on macOS and Windows
  • Apple Speech for on-device recognition and window exclusion on macOS
  • Vosk, bundled as a local model, for recognition on Windows
  • Ed25519 signatures for licence keys, sold through Paddle
  • Sparkle for updates on macOS, Sentry for crash reporting

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Speechius and Thunderbird

Speechius Reviews

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Thunderbird Reviews

10 Best Alternatives to Microsoft Outlook to Try in 2023
Mozilla Thunderbird is an open-source email client developed by the Mozilla community. For people who like having their email offline, a range of customization options, robust data protection and privacy features, and a browser-like tab-based navigation, Thunderbird can be an excellent Outlook alternative to consider.
Source: mysignature.io
11 Top Outlook Alternatives to Try
Thunderbirdโ€™s interface takes a hint from Mozilla Firefox and other popular browsers and lets you open multiple emails in separate tabs. There are a lot of options to customize the look and feel of your inbox, as well as add-ons to add functionality.
Source: kinsta.com
10 BEST Outlook Alternatives in 2023
Thunderbird is an open-source, cross-platform email suite. It is one of the best Mac mail applications that provides easy to use wizard for setting account. This software helps you to personalize the email the way you like.
Source: www.guru99.com
10 Alternatives to Thunderbird Reddit โ€“ Ease Your Email Life!
FAQs On Thunderbird Alternative Email Thunderbird is so slow, why? As a result, Thunderbird is slower when MSF files, which store emailsโ€™ indexes, get corrupted. You can test this by opening Thunderbird in Safe Mode in Windows 10 to see if the problem is with third-party applications. Can Thunderbird email be used on Windows 10? Microsoft Windows 10 and Mozilla Thunderbird...
Source: droidpile.com
Best Alternatives to Thunderbird
Mozilla Thunderbird is an open-source email client and is loaded with rich features. But they are not as promising as the need of current digital users. The existing users need more incredible features that would enhance their emailing experience and help them maintain their calendar, tasks, etc. with a less complex interface. In this post, we have mentioned some email...

What are some alternatives?

When comparing Speechius and Thunderbird, you can also consider the following products

FlowPrompter - A Fluid and Smooth Teleprompter APP

Microsoft Outlook - Organize your world. Outlookโ€™s email and calendar tools help you communicate, stay on top of what matters, and get things done.

GhostPrompter - Read your script while recording or presenting. GhostPrompter is a laptop teleprompter app for Windows and Mac with click-through overlay. One-time $49.

Mailbird - Mailbird is the best email client for Windows 7, 8 and 10

TalkEze - Invisible speaker notes, visible confidence.

eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.