Software Alternatives, Accelerators & Startups

Sentry.io VS ForthWrite

Compare Sentry.io VS ForthWrite and see what are their differences

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Sentry.io logo 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.

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
  • Sentry.io Landing page
    Landing page //
    2023-08-26
  • 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.

Sentry.io

Website
sentry.io
Pricing URL
-
$ Details
-
Platforms
-
Release Date
-
Startup details
Country
United States

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

Sentry.io features and specs

  • Real-time error tracking
    Sentry provides real-time error tracking, ensuring that developers are immediately notified of errors as they occur. This allows for faster debugging and reduces downtime.
  • Detailed error reports
    Sentry generates detailed error reports which include stack traces, diagnostic data, and contextual information, making it easier to understand and resolve issues.
  • Integrations
    Sentry integrates seamlessly with a wide range of development tools and services such as GitHub, Slack, Jira, and more, allowing for smooth workflows and streamlined issue management.
  • Releases and version tracking
    Sentry's releases feature allows developers to track errors and performance issues specific to software releases, helping in identifying regressions and ensuring each new version is more stable.
  • Performance monitoring
    Beyond error tracking, Sentry offers performance monitoring which helps in identifying slow performance issues and bottlenecks within the application.
  • User feedback
    Sentry allows capturing user feedback directly within the application, which can provide additional context to errors and improve the overall user experience.

Possible disadvantages of Sentry.io

  • Pricing
    Sentry's pricing model can be expensive for small teams or startups, especially if they need advanced features or higher usage limits.
  • Complexity
    Despite its rich feature set, Sentry can be quite complex to configure and use, particularly for developers who are new to error tracking and monitoring tools.
  • Learning curve
    There is a learning curve associated with Sentry, both in terms of setup and effectively utilizing all its features to their full potential.
  • Potential privacy concerns
    Given that Sentry collects a significant amount of diagnostic data, there may be privacy concerns, especially in regulated industries that require strict data compliance.
  • Resource usage
    The integration of Sentry into an application can add some overhead in terms of resource usage, which might be a concern for high-performance applications.

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 Sentry.io

Overall verdict

  • Sentry.io is regarded as a powerful and efficient tool for error tracking and performance monitoring, especially for developers who want to improve their application's reliability and stability.

Why this product is good

  • Sentry.io is considered a good monitoring tool due to its comprehensive error tracking and performance management features. It allows developers to quickly identify and resolve issues in their applications by providing detailed error reports, stack traces, and context about the environment in which an error occurred. Additionally, its integration capabilities with various programming languages and platforms make it a versatile choice for many development teams.

Recommended for

    Sentry.io is recommended for software development teams of all sizes, particularly those who need robust error monitoring solutions, operate across multiple programming languages, or require integration with other development tools and workflows. It is also beneficial for teams looking to enhance their application's performance and quickly respond to issues in production.

Sentry.io videos

Application Monitoring 101: Getting Started with Sentry

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Sentry.io and ForthWrite)
Error Tracking
100 100%
0% 0
Email
0 0%
100% 100
Monitoring Tools
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Sentry.io 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 Sentry.io and ForthWrite

Sentry.io Reviews

Comparison of Cron Monitoring Services (November 2023)
Sentry launched in 2012, is registered in the United States and runs on AWS and Google Cloud. Sentry is a VC-funded company and has 200+ employees. Sentry started as an error tracking service, grew into APM, and launched cron monitoring support in public beta in January 2023. Sentry uses the SaaS business model, but its source code is available under the FSL license. Sentry...
5 Best DevSecOps Tools in 2023
There are many platforms that can be utilized for monitoring and alerting. Some examples are New Relic, Datadog, AWS CloudWatch, Sentry, Dynatrace, and others. Again, these providers each have pros and cons related to pricing, offering, ad vendor lock-in. So research the options to see what may possibly be best for a given situation.
13 tools to use for DevSecOps automation
๐Ÿ’ฐ Sentry.io is a service that helps you monitor and fix crashes in real-time, so that you can diagnose and optimize code performance. The Sentry.io node allows you to manage information about events, issues, projects, and releases.
Source: n8n.io
Best Error Monitoring Services for Elixir Phoenix
Sentry provides an Elixir-specific getting started guide to walk you through setup. It also provides an Elixir SDK you can add as a mix.exs package. Sentry limits email support to only customers on certain plans. However, it does offer a community forum to ask questions.
Source: staknine.com
6 Bugsnag Alternatives to Consider in 2021
Sentry is a cloud-hosted error tracking tool that helps to resolve crashes and other similar issues in your apps. Many software teams use Sentry to enhance their deployed appโ€™s efficiency and build a better user experience. Sentry assists you in catching and fixing multiple errors together with ease. In general, this error tracking solution can automatically track all types...
Source: scoutapm.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, Sentry.io seems to be more popular. It has been mentiond 68 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.

Sentry.io mentions (68)

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 Sentry.io and ForthWrite, you can also consider the following products

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

Superhuman - Superhuman is an email management tool.

Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.

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.

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.

Lavender - Realtime coaching for sales emails.