Software Alternatives, Accelerators & Startups

Raygun VS ForthWrite

Compare Raygun VS ForthWrite and see what are their differences

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Raygun logo Raygun

Raygun gives developers meaningful insights into problems affecting their applications. Discover issues - Understand the problem - Fix things faster.

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.
Visit Website
  • Raygun Landing page
    Landing page //
    2023-10-19
  • 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.

Raygun

Website
raygun.com
$ Details
-
Platforms
-
Release Date
-
Startup details
Country
New Zealand

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

Raygun features and specs

  • Comprehensive Error Tracking
    Raygun provides detailed insights and diagnostics for errors, including stack traces, affected users, and environment information. This helps developers quickly identify and fix issues.
  • Real User Monitoring
    Raygunโ€™s Real User Monitoring (RUM) feature tracks actual user sessions, giving insights into user experience, performance metrics, and identifying bottlenecks in real-time.
  • Crash Reporting
    Raygun offers robust crash reporting for both mobile and web applications, which helps in identifying, diagnosing, and resolving application crashes effectively.
  • Integrations
    Raygun integrates seamlessly with many development tools like JIRA, Slack, GitHub, and others, enabling smooth workflow management and collaboration.
  • Custom Dashboards
    Users can create custom dashboards tailored to their specific needs, helping them track important metrics and outcomes at a glance.
  • Performance Monitoring
    Raygunโ€™s performance monitoring allows you to keep an eye on application performance, detecting slow load times, and providing actionable insights to improve speeds.
  • User Tracking
    Raygun can track specific user sessions which helps in understanding how individual users are affected by bugs and performance issues.

Possible disadvantages of Raygun

  • Cost
    Raygun can be relatively expensive compared to some other error-monitoring tools, especially for small businesses or startups.
  • Steep Learning Curve
    New users may find the platform complex initially, requiring time and effort to understand all the features and functions.
  • Limited Free Tier
    The free tier of Raygun is limited in terms of features and usages, which may not be sufficient for growing projects or enterprises.
  • Overhead
    Integrating Raygun into projects may introduce some performance overhead, particularly if not configured properly.
  • Alert Fatigue
    Raygun can generate a large number of alerts, which can lead to alert fatigue and make it difficult to prioritize critical issues without proper filtering and configurations.

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 Raygun

Overall verdict

  • Raygun is a solid choice for teams looking for comprehensive error tracking and real user monitoring. Its robust feature set and user-friendly interface make it a strong contender in the application monitoring space.

Why this product is good

  • Raygun is widely regarded as a good error and performance monitoring tool because it provides detailed crash reports, real-time user monitoring, and integrates seamlessly with a variety of development tools. It helps developers identify and resolve issues quickly, offering clear insights into the root cause of errors and how they affect user experiences.

Recommended for

  • Developers who need detailed crash reports and diagnostics.
  • Teams looking for real-time performance monitoring.
  • Organizations that require effective integration with existing development workflows.
  • Software companies that want to optimize end-user experiences.

Raygun videos

Nike Dunk SB โ€œRaygunโ€ Review & On Feet

More videos:

  • Review - 2019 K2 Raygun Snowboard Review
  • Review - The K2 Raygun Snowboard Review

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Raygun and ForthWrite)
Error Tracking
100 100%
0% 0
Writing Tools
0 0%
100% 100
Monitoring Tools
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Raygun and ForthWrite.

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 makes your product unique?

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.

Why should a person choose your product over its competitors?

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.

How would you describe the primary audience of your product?

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'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

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Reviews

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

Raygun Reviews

6 Bugsnag Alternatives to Consider in 2021
RayGun is close to being the perfect error monitoring solution in the market, owing to its support for nearly all frameworks and languages. Its SDKs are also known to be very lightweight. RayGun can sort through errors intelligently and help you identify the segment of users affected by a specific issue. Another striking feature of RayGun is that it provides crystal clear...
Source: scoutapm.com
10 Best Application Monitoring Tools for all Platforms
Raygun seems so effective to alert you when you got your app crashed by gathering the data and send it to your email by notification. It is quite simple, but Raygun is effective and real-time. Suppose you have some difficulties to find some bugs in your app, then you can use the search function feature available. Therefore, it is a good idea if you put this application...
Source: www.technig.com
The top 19 APM tools in 2020
Application Performance Monitoring (APM) from Raygun offers a comprehensive solution that enables you to monitor the performance of your applications from one central location. Crash Reporting, Real User Monitoring, and APM software work together to provide real-time data about the user experience and performance, which you can easily leverage to identify bottlenecks. Simply...
Source: raygun.com

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, Raygun seems to be more popular. It has been mentiond 8 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.

Raygun mentions (8)

  • Best Practices for Consistent API Error Handling
    Tools like Sentry support distributed tracing in over 15 languages, while Raygun offers deployment correlation to pinpoint issues [2]. - Source: dev.to / over 1 year ago
  • 12 Best Instabug Alternatives For Debugging In 2025
    Raygun is the application monitoring and error tracking tool, which helps developers find and diagnose, hence resolve the issue in real time. It gives detailed crash reports, performance insights, and user session data to ensure the general application reliability and user experience. Raygun has support for all web, mobile, and backend systems and also supports integrating with tools such as Jira and Slack for... - Source: dev.to / over 1 year ago
  • Sentry Alternatives for Better Error Tracking
    Raygun is a comprehensive software monitoring and performance management platform that helps developers and teams deliver high-quality, error-free software experiences for their users. The tool provides a suite of features to monitor, diagnose, and resolve issues across web and mobile applications. - Source: dev.to / almost 2 years ago
  • 10 best Javascript debugging tools
    Raygun is a cloud-based platform that makes sure your web and mobile applications are free of errors, as well as your users are satisfied. It specializes in JavaScript error monitoring and offers a wide range of features to help you easily detect and fix issues. - Source: dev.to / over 2 years ago
  • How Handle Bugs in Agile Development
    We can make the process a little easier by using our agile processes together with a continuous deployment strategy. For example, our friends at Raygun, discovered that โ€œwhen a team gets locked into a sprint it can become much harder to recognize and fix bugsโ€. - Source: dev.to / almost 3 years ago
View more

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 Raygun and ForthWrite, you can also consider the following products

Sentry.io - From error tracking to performance monitoring, developers can see what actually matters, solve quicker, and learn continuously about their applications - from the frontend to the backend.

Superhuman - Superhuman is an email management tool.

Rollbar - Rollbar collects errors that happen in your application, notifies you, and analyzes them so you can debug and fix them. Ruby, Python, PHP, Node.js, JavaScript, and Flash libraries available.

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.

BugSnag - Not all bugs are worth fixing. Prioritize and fix software bugs that matter while improving software stability with every release.

Lavender - Realtime coaching for sales emails.