Alternatives to Sheldon

superReply is a Chrome extension that generates tone-matched AI email replies inside Gmail and Outlook Web. Free up to 90 replies a month.

Jetwriter AI is a browser extension that drafts email and message replies in your voice on Gmail, Slack, LinkedIn, and other sites you already use.

Jasper runs 100+ AI marketing agents with GEO measurement, Content Pipelines and brand-governed content at scale.

Eskritor is a free AI text generator that drafts blogs, essays, emails, resumes, stories, and citations from a prompt, with style and length controls.

AI executive assistant that drafts email replies on top of Gmail and Outlook with full business context.

Slashy is an AI email client that drafts replies in your voice, chases follow-ups, and lets you triage your inbox from iMessage or Slack.

AI email assistant for Apple Mail, Gmail, and Outlook that drafts, replies, and summarizes without leaving your inbox.

AI Gmail add-on that auto-drafts contextual email replies in your voice, ready for your review before sending

Replai is an AI email assistant that drafts Gmail and Outlook replies in your own writing voice, then triages the rest of your inbox.

Cora is an autonomous AI email assistant that connects to Gmail, drafts replies in your voice, and sends you twice-daily briefs.

Z.ai is a free browser-based AI assistant and code generator running the open-weights GLM model series.

Local-first AI memory for macOS and Windows that drafts replies in your tone from your own past messages.

Spark Mail is an AI email client that sorts, summarizes, and drafts across every account you own

Shortwave is an AI email assistant that triages, drafts, schedules, and searches your Gmail inbox with one prompt.

Stamp is an AI secretary that drafts replies in your voice, prioritizes your inbox, and schedules your calendar.

AI email rewriting tool for Gmail, Outlook, LinkedIn, and iOS with custom tones and Quick Replies.

NOX (formerly RPLY) puts 10 messaging apps into one macOS inbox and drafts replies in your voice.

Gmail add-on that drafts a professional reply to an email with one click, billed by shared pay-per-use word credits rather than a subscription.

Writer runs enterprise AI agents that execute multi-step marketing and revenue work end to end, on brand.

Superhuman is an AI email client, docs workspace, and Go assistant whose proactive agents run where your team already works.

Webflow's AI site builder generates full websites from a prompt inside the Webflow platform you already publish on.

SmartStudi Sidebar puts an AI detector, paraphraser, and citation generator in a Chrome sidebar.

Sassbook is a freemium AI writing suite with specialised tools for articles, stories, summaries, paraphrasing, and headlines.

Copy.ai turns your GTM playbook into AI workflows that run prospecting, content, and sales research on one AI-native platform.

AI keyboard for texts, emails, and dating app icebreakers on iPhone.

Hanva LLC's website showcases iOS apps and dual-screen laptops, with no Chatly product page in evidence.

Missive + AI adds GPT-powered summarize, translate, and reply drafting to a shared team inbox for email, SMS, and chat.

Shortwave is an AI email assistant that runs an agent inside your Gmail inbox to triage, draft, schedule, and search with a prompt.

All-in-one AI suite for articles, images, voiceovers, speech-to-text and code

Inline AI writing assistant that rewrites text right where you type in Chrome.