Software Alternatives, Accelerators & Startups

Localize VS ForthWrite

Compare Localize VS ForthWrite and see what are their differences

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Localize logo Localize

Automate Translation. Accelerate Growth.

ForthWrite logo ForthWrite

Email that sounds like you, and gets measurably more like you every week. Drafts in Gmail, Outlook, and the browser. Free to start.
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  • Localize Landing page
    Landing page //
    2021-12-10

Localize is a no-code translation solution for SaaS platforms, allowing you to easily translate your website, web app, dashboard, API docs, and much more. With traditional solutions - as well as building it in-house - it could take months to offer multilingual support to users. With Localize, you can translate any web-based platform or content in just hours - allowing you to expand into new markets and delight customers around the globe.

Enterprise SaaS, healthcare and financial services brands like Cisco, Intuit, Atlassian, Afterpay, Discord, and Canva use Localize to easily translate their platforms and provide great user experiences to all customers.

  • ForthWrite Landing Page
    Landing Page //
    2026-06-19
  • ForthWrite Dashboard
    Dashboard //
    2026-06-19
  • ForthWrite In Gmail
    In Gmail //
    2026-06-19
  • ForthWrite Pricing
    Pricing //
    2026-06-19

ForthWrite is an AI email writing assistant for Gmail and Outlook that learns your writing style from your real sent mail. The more you use it, the more it sounds like you. Get smart drafts in seconds, auto-draft replies before you open your inbox, and maintain your personal voice at scale. Free to start, no credit card required. Works inside Gmail and Outlook on the web.

How it works

ForthWrite captures your tone, sentence rhythm, and sign-offs from your actual sent emails, then uses that profile to generate drafts that match how you write, not a generic AI voice. Every draft you edit or send improves the model over time.

Key features

  • Auto-draft: replies waiting in Gmail before you open your inbox
  • Voice matching from your real sent mail, not templates
  • Recipient-aware drafts that adapt to who you are emailing
  • Prompt Lab for version-controlling and A/B testing your persona prompt
  • BYOK support: bring your own API key for Claude, OpenAI, Grok, Mistral, and more
  • Works in Gmail and Outlook on the web, plus a standalone browser widget
  • Training data export and full data portability

Who uses it

Professionals who send high volumes of relationship-critical email: lawyers, financial advisors, recruiters, account executives, founders, and anyone who wants their inbox handled without sounding like a chatbot wrote it.

Pricing

Free tier includes 10 drafts per week with no credit card required. Paid plans start at $12/month and include unlimited drafts, custom persona prompts, and auto-draft.

Localize

$ Details
paid Free Trial $50.0 / Monthly (Basic, Individual)
Platforms
Browser Web iOS Android Cloud
Release Date
2015 March
Startup details
Country
United States
State
New York
Employees
20 - 49

ForthWrite

$ Details
freemium $12.0 / Monthly (Standard plan)
Platforms
Web
Release Date
2026 June
Startup details
Country
United States
State
California
City
San Diego
Founder(s)
Curtis Boortz
Employees
1 - 9

Localize features and specs

  • Ease of Implementation
    Localize can be integrated into websites with just a few lines of code, making it accessible for developers with varying levels of experience.
  • Real-Time Editing
    The platform allows for real-time editing of translations directly in the user interface, which can streamline the localization process.
  • Localize AI Suite
    Start with assisted translation, scale to full automation, and maintain control every step of the way.
  • Automation
    Localize offers automation features like automatic language detection and text extraction, reducing manual work and human error.
  • Multi-Language Support
    It supports a wide range of languages and regional dialects, making it suitable for global applications.
  • Analytics and Reporting
    Provides detailed analytics and reporting tools to track translation usage and effectiveness, helping in better decision-making.
  • Collaboration Tools
    Offers robust collaboration tools for teams, allowing multiple translators and project managers to work together efficiently.
  • Customer Support
    Good customer support and extensive documentation help resolve issues quickly and get the most out of the platform.
  • Translation Quality Scoring
    Get AI quality scores and specific improvement insights to optimize translations.

Possible disadvantages of Localize

  • Cost
    The service can be expensive for small businesses or personal projects, as it follows a subscription-based pricing model.
  • Learning Curve
    While implementation is straightforward, fully leveraging all the features and functionalities may require a steep learning curve.
  • Limited Offline Capabilities
    The platform's reliance on cloud-based solutions can be a downside for applications that require offline capabilities.
  • Dependency on Third-Party Service
    Using Localize.js means adding a dependency on a third-party service, which might raise concerns regarding data security and uptime.
  • Customization Limitations
    Some advanced customization and integration options are limited, which could be restrictive for highly-specific use cases.
  • Occasional Performance Issues
    There can sometimes be performance issues, particularly for websites with large volumes of content to translate.

ForthWrite features and specs

  • Voice Matching
    Learns from your real sent mail, not templates
  • Auto-draft replies
    Replies waiting in Gmail before you open your inbox
  • Batch-drafting
    Draft replies for your entire inbox with one click
  • Works in browser
    Gmail, Outlook, and web browsers
  • BYOK support
    Claude, OpenAI, Grok, Mistral, and more
  • Prompt Lab
    Version control and A/B test your persona prompt
  • Free tier
    10 drafts per week, no credit card required

Analysis of Localize

Overall verdict

  • Localize is a solid choice for businesses seeking a streamlined approach to managing multilingual content. Its robust feature set and ease of integration make it a valuable tool for companies looking to expand their reach in different language markets.

Why this product is good

  • Localize (localizejs.com) is a powerful tool for managing multilingual content. It offers an easy-to-use platform for translating websites and mobile applications. The service integrates well with various development environments and supports automatic translation alongside the capability for manual adjustments. This flexibility ensures both efficiency and accuracy in localization efforts.

Recommended for

    Localize is particularly recommended for businesses and developers who need to translate and manage content in multiple languages efficiently. It is ideal for companies with global operations or ambitions to serve a diverse, international customer base. Additionally, it is beneficial for those wanting to enhance their website or app localization process without extensive in-house translation resources.

Analysis of ForthWrite

Overall verdict

  • I don't have verified information about a product called ForthWrite (forthwrite.ai). I cannot confirm its features, quality, or reputation, so I'm unable to provide an accurate assessment of whether it's good.

Why this product is good

  • No reliable data available on this specific product in my knowledge base
  • This may be a newer product, a niche tool, or possibly a fictional/hypothetical name
  • Providing details without verified information could result in inaccurate or fabricated claims

Recommended for

  • Unable to determine without verified product information
  • Consider checking the official website, user reviews on platforms like G2 or Trustpilot, and independent tech review sites for accurate details

Localize videos

How Localize Works

More videos:

  • Review - How I Localize Japanese: An Actual Example From My Job

ForthWrite videos

No ForthWrite videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to Localize and ForthWrite)
Localization
100 100%
0% 0
Writing Tools
0 0%
100% 100
Website Localization
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Localize and ForthWrite.

How would you describe the primary audience of your product?

Localize's answer

-SaaS companies -Healthcare companies/providers -Financial services organizations -Government entities -Ecommerce sites

ForthWrite's answer:

Professionals who send high volumes of relationship-critical email and cannot afford to sound generic: lawyers, financial advisors, recruiters, account executives, consultants, and founders managing their own inbox.

What makes your product unique?

Localize's answer

Localize is a no-code translation solution for software platforms that leverages the power of AI to translate your web app, UI, website, help docs, emails, and more.

ForthWrite's answer:

ForthWrite learns your writing style from your actual sent mail, not a generic prompt. Every draft sounds like you wrote it because it was trained on how you actually write. It also auto-drafts replies before you open your inbox, so your email is partially handled before your day starts.

Who are some of the biggest customers of your product?

Localize's answer

-Cisco -Inuit -Atlassian Status Pages -Canva -Autodesk -Blackline -Discord -Code.org -Baptist Health

Why should a person choose your product over its competitors?

Localize's answer

Localize is the top-rated translation management solution for growth-minded enterprises. We're known for our ease of use, top-tier customer service and speed to value. Translate your website in minutes, not months with Localize.

ForthWrite's answer:

Most AI email tools give you a blank box and a "write for me" button. ForthWrite builds a voice profile from your sent history and gets more accurate with every draft you edit or send. Unlike ChatGPT or Gemini, it works natively inside Gmail and Outlook with no copy-paste. Unlike Lavender, it writes the draft, not just scores it.

Which are the primary technologies used for building your product?

ForthWrite's answer:

Next.js, React, Supabase, Anthropic Claude, OpenAI, Stripe, Vercel, Chrome Extensions API

What's the story behind your product?

ForthWrite's answer:

Built out of frustration with AI writing tools that produce text that sounds nothing like the person sending it, and as a way to handle large amounts of daily email. The core insight was that your sent mail is the best training data you already have, and no tool was using it.

User comments

Share your experience with using Localize and ForthWrite. For example, how are they different and which one is better?
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Reviews

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

Localize Reviews

Best Localization Software in 2022
It is possible to translate web pages and apps in a more efficient manner. Localize is a low-code solution for managing multilingual content for multinational companies. Simply add the Localize snippet to your website or web app and leave the rest to our software. Our file-less approach allows for easy version control and speedy communication with translators, resulting in...
Source: tolgee.io

ForthWrite Reviews

  1. curtisboortz
    ยท Founder at ForthWrite ยท
    I built ForthWrite to fix generic AI email, and I still use it every day

    I built ForthWrite because I kept sending emails that sounded like they came from the same generic AI as everyone else. After launching it, I still use it for my own inbox every day, which is about the most honest endorsement I can give.

    The Chrome extension lives inside Gmail and Outlook on the web. Open a thread, hit Alt+Shift+D, and a draft comes back in your voice, not a template. The free tier is real: 10 drafts per week, no API key, no credit card. Voice matching is included on free, because that is the point.

    What keeps it useful compared to Gemini or a chat tab: it learns from what you actually send. Every edit you make before hitting send becomes a signal. Over time the drafts drift closer to how you really write, and the dashboard shows the improvement curve so you can see it happening.

    The web compose surface lets you draft from forthwrite.ai without installing anything, useful for people who want to try before committing to the extension.

    Standard adds recipient-aware and intent-aware drafting plus AI coaching. Pro adds auto-draft (replies waiting when you open Gmail), batch replies, and Prompt Lab for version-controlling your prompts. Teams adds a shared persona and seat-level analytics.

    ForthWrite is not for everyone. If you just need quick replies and tone does not matter, Gemini is free and already in your inbox. ForthWrite is for people where tone does matter: client communication, relationship-driven threads, external correspondence where sounding off costs something real.

    Disclosure: I am the founder and use it daily. Happy to answer questions in the comments.

    ๐Ÿ Competitors: Jace.ai, Fyxer, Mailmeteor
    ๐Ÿ‘ Pros:    Drafts land inside gmail and outlook; no copy-pasting from a chat window|Voice matching is on the free tier, not paywalled behind paid plans|No api key, no credit card to start; free tier runs on a server-side proxy|Learns from every edit you make before sending; drafts improve over time|Full keyboard flow: alt+shift+d to draft in any thread, no mouse required|Byok on paid plans, 9 providers supported, keys encrypted at rest|Web compose at forthwrite.ai works without installing the extension at all
    ๐Ÿ‘Ž Cons:    10 free drafts/week is enough to evaluate, not enough for a heavy inbox|Auto-draft, batch replies, and prompt lab all require the pro tier|Early-stage product; fewer third-party integrations than mature inbox tools|No mobile app: the extension and add-in are desktop-only (chrome on web, or the outlook desktop add-in)

Social recommendations and mentions

Based on our record, Localize seems to be more popular. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Localize mentions (3)

  • How to handle big translation projects with a Gatsby site ?
    There are definitely i18n solutions to problems like this, but have you looked at an agent based solution such as https://localizejs.com? We used it for a project at work and itโ€™s actually a surprisingly robust way to deal with translation by separating language management from development effort. Source: about 5 years ago
  • On Depression and Founders
    I run a company called Localize (https://localizejs.com). Iโ€™d love to speak to anyone with a background like yours for a PM or technical role with us. Thereโ€™s no experience better than starting and failing at startups/side projects to prepare yourself for a Product Management role. brandon@localizejs.com. - Source: Hacker News / about 5 years ago
  • Ask HN: Who is hiring? (April 2021)
    Localize | https://localizejs.com | REMOTE (US / Canada) | Full-time | Backend & Full Stack Engineers We're hiring Full-Stack Engineers to join our remote-first team. As a core member of our engineering team, youโ€™ll be responsible for implementing new functionality within Localizeโ€™s core product, maintaining existing code and functionality, and improving existing systems for maintainability, scalability, and... - Source: Hacker News / over 5 years ago

ForthWrite mentions (0)

We have not tracked any mentions of ForthWrite yet. Tracking of ForthWrite recommendations started around Jun 2026.

What are some alternatives?

When comparing Localize and ForthWrite, you can also consider the following products

POEditor - The translation and localization management platform that's easy to use *and* affordable!

Superhuman - Superhuman is an email management tool.

Phrase - The worldโ€™s leading Language Intelligence Platform.

Gemini - Gemini, formerly known as Bard, is a generative artificial intelligence chatbot developed by Google. Based on the large language model (LLM) of the same name, it was launched in 2023 in response to the rise of OpenAI's ChatGPT.

Transifex - Transifex makes it easy to collect, translate and deliver digital content, web and mobile apps in multiple languages. Localization for agile teams.

Lavender - Realtime coaching for sales emails.