Slate™ Desktop Edition

Slate™ Desktop Edition sets the standard for full-featured assistive translation software for professionals. It’s a convenient drop-in replacement for cloud-based machine translation services that eliminates the need for Internet connections.


Slate Desktop Edition supports any combination of 33 languages and the number of supported languages keeps growing. That means your Slate MT application with your TMs can translate between 1,056 language pairs with more language pairs to come.

Perpetual License

You purchase Slate under a perpetual, royalty-free end-user-license agreement (EULA) to use the Slate software on your machines. There are no subscriptions or hidden fees. When your needs grow, just buy another license for a new machine.

Maintenance Updates

Software maintenance updates, occasionally with new features, are available any time. Just sign-in to our website and download the newest update from your customer dashboard.

Technical Support

Your Slate purchase includes access to technical support via our online support portal, https://support.slate.rock.

Single Activation

Your single-user license allows you to install your Slate product on one machine. The installer activates the installation with our activation server. The uninstaller automatically reverses it. You can purchase Slate Connector Edition to work with your engines another computer to work on-the-road at a conference or to pretranslate projects for distribution.

Money-back Guarantee

We understand that our translation market is risky.

That’s why your Slate Deskotp Edition and Slate Starter Edition purchase includes a money-back guarantee.

You’ll experience Slate‘s features and we will provide unparalleled support while you evaluate how your translation memories perform as an engine.

If you’re not fully satisfied, uninstall the Slate™ and request a refund within 30-day of your purchase. We will refund your full purchase price immediately – no questions asked.

Expert Review

We’ll help you understand how your first engine performs. Send us the automated evaluation report. We’ll review the performance with you.

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System Requirements

Operating Systems

    • Microsoft Windows, 64-bit
      • Windows 7 64-bit with Service Pack 1
      • Windows 8 or 8.1 64-bit
      • Windows 10 64-bit
    • Linux, x86_64 kernel version 3.2+
      • Ubuntu 16.04 or newer (other Debian-based on request)
      • CentOS/RHEL-based (other RPM-based on request)


    • Processor (CPU): x86-64/x64 quad-core processor at 2.5 GHz or faster
      • Intel Core i3 (i7 4th gen or newer strongly recommended)
      • AMD Athlon 64
    • RAM (memory): 4 GB, 8 GB strongly recommended (16+ GB ideal)
    • System Hard Disk (program storage): 2 GB consumed by installation files
    • High-Performance Disk Space (workspace): 40+ GB of free space (250 GB or more strongly recommended)

Translation Memories

    • Personalized engine: 70,000 to 150,000 sentence segments.
      • One full-time translator’s production for 3 to 4 years is sufficient to create a personalized engine.
    • Customized engine: 200,000 to 500,000 sentence segments.
      • An engine for a team of translators requires more.
    • There is no upper limit.
      • Too many segments increases the risk of degrading the engine from peak performance.


Slate Desktop Build Engine Start

Build Engines

Build customized and personalized SlateMT engines from translation memories in your inventory that outperform generic Internet machine translation services.


CorpusFiltergraph™ is Slate‘s workflow framework. It manages all utilities and processes.

Master Utilities

The master utilities import translation memories and extract segments from translation memories and prepare prepare them to build engines.

Backup & Restore

The MT engines you make are important and take a long time to make. SlateMT include simple menus to backup and restore the engines and the TMs that created them, giving you peace of mind and the ability to copy your engines to use on other machines.

Export & Import

The MT engines you belong to you. SlateMT include simple menus to export your engines into self-contained packages and to import those packages to use on another Slate system. Simply copy your package to another computer install the engine you made on another Slate system.

Command Line Interface

The command-line utilities give power-users access to customize other utilities and create new ones to perform virtually any complex operations.

Graphical User Interface

The Slate MT application’s dashboard gives you easy-to-use access to common utilities.

Connectors Interface

The connectors interface manages the integration between your CAT and Slate engines that suggestion translations and enforce terminology.

Slate Samples

Samples include translation memories and other files to help you learn and practice.

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Open Source Components

Perl Runtime

Perl is a free open source runtime environment with supporting core components. (includes: Date::Format)

Python Runtime

Python is a free open source runtime environment and supporting core components. (includes pip, pywin32, six, numpy, nltk, lxml, regex, polib, jieba, PyArabic, tinysegmenter3, wxPython)

GNU Utilities

The GNU Utilities are separate but essential open source utilities that is the Moses Toolkit must have to create SMT models.


MGIZA++ is an essential open source utility that is the Moses Toolkit uses to create SMT models.

Moses Decoder

The decoder is the utility that converts source to target text using SMT models created by the toolkit.

Moses Toolkit

The toolkit, derived from the original Moses open source project, is a collection of open source utilities that create SMT models.

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