Marketing and social content

A calendar that publishes posts to more than 30 social networks: X, LinkedIn, Instagram, TikTok, YouTube, Reddit, Bluesky, Discord and others. The whole code is open source, so anyone can run it on their own server for free; the company sells the hosted version from US$29 a month. Since 2025 AI agents such as Claude, ChatGPT and OpenClaw can connect to it through an MCP server, a command-line tool and a public API, so an agent drafts and schedules the posts and a person approves them in the calendar.

The founder took a twenty-year-old product category with no open-source entry and open-sourced all of it, which gave him millions of Docker downloads and 37,000 GitHub stars without a marketing budget. Revenue stayed small for a year. It multiplied when he turned the product toward people who automate their posting with n8n workflows and, from late 2025, with AI agents, which need an API-first scheduler and keep paying because they post without human effort.

An AI agent for paid advertising that works inside ChatGPT, Claude, Claude Code, Cursor and other AI assistants. It connects to the customer's ad accounts at Google, Meta, LinkedIn, TikTok, Amazon and ChatGPT Ads, researches keywords, builds campaigns (always created paused), reports results and finds wasted spend. Scheduled agents can also watch the accounts and make reversible changes. The customer pays the ad platforms directly.

It went where the users already were: an app in ChatGPT's app store, a plugin in Claude's directory and in Claude Code, and setups for Cursor and Codex, in the months when these directories were new. It charges per tool call instead of a share of ad spend, so a small advertiser starts at US$49 a month. And it applied to the platforms' own API programs; the company says Google approved it in June 2026 and Amazon admitted it to its partner network.

A LinkedIn lead finder for B2B sales teams. You list LinkedIn profiles to watch; traxy collects the people who like, comment on or repost their posts, scores each one against your ideal buyer, adds an email address and phone number, and an AI agent can write and send the first message.

The founder already ran a LinkedIn ghostwriting agency and built the lead tool that the agency needed. He sold it with the tool itself: traxy found the leads, and his team contacted them. Daily posts on X added trials, and credit-based prices let heavy users pay more.

A web app that writes LinkedIn posts in the member's own style from an idea, a voice note, a video, an article or a short interview with an AI, then schedules and publishes them. Team plans add approvals, a shared calendar and analytics for each employee. It can also be used from inside Claude and ChatGPT.

It entered a market where people already paid for tools such as Taplio, and did the one core task better: writing the post. The founders' public posts brought the first customers and a lifetime-deal platform, and that deal paid for growth without investors. Subscriptions, partnerships with LinkedIn influencers, affiliates and a move to team plans came after.

An iPhone app that turns a voice memo of 30 seconds to 2 minutes into an Instagram or LinkedIn carousel, a reel or TikTok script, a thread for X, story scripts and hooks. It places the text on templates and exports PNG images or a PDF. It can also learn the user's writing style, suggest post ideas, and turn a pasted video link into the user's own carousel.

A carousel needs both writing and design. Draft AI asks for a minute of speech instead and returns finished slides, plus scripts, threads and hooks from the same recording. It charges before the first result, so everyone who uses it has subscribed or started the trial of a paid plan.

An AI agent for Upwork. It reads the Upwork job feed against filters that the customer sets, checks with AI whether each job fits, writes a proposal and the answers to the screening questions from the customer's own knowledge base, and submits it from the customer's Upwork account, with optional boosting. Replies are tracked in an inbox. An MCP server and a REST API let the customer's own AI agent run it.

The founder had the problem himself. Upwork had become his agency's best sales channel, but 10,000 jobs a day are posted around the clock and he could cover only about 8% of them by hand. He built the tool for his own agency and charged agency owners a business price from the start. Two Upwork coaches, who advise freelancers and agencies, switched their clients to it as affiliates, and that produced most of the growth.

A web app that turns a short description of a business into a marketing strategy, customer profiles, ideas and a task list, using GPT-4 with long prompts written by two marketers. Free AI tools bring the visitors; the full strategy is sold for a one-time payment.

It put the founders' marketing method behind a simple form at the time when people were trying to do marketing with ChatGPT and getting weak answers. A one-time price matched a need that comes rarely, and free tools brought search traffic without paid ads.

A web app that creates, launches and adjusts ad campaigns on Meta, Google, TikTok and LinkedIn from a written request. It writes the ads, makes images and videos, works in the customer's own connected ad accounts, and shows which ads to pause or give more budget. Agencies run it themselves from US$499 a month; for brands, Adle's staff run it for US$499 a month plus 15% of the ad spend.

The founders first ran a marketplace that paid creators in free products, and saw that their clients' results were decided inside the ad platforms. In 2024 they rebuilt the company around ad buying, sold it themselves through demos to agencies and brands, and added a plan where their own staff run the ads. Stripe shows revenue almost four times higher in March 2026 than in October 2025, then a fall.

A web app for creators and small businesses on Instagram and TikTok. It reads the user's connected account, plans two weeks of posts, writes video scripts in the user's voice, designs carousels and edits the talking-head videos that the user records. A library of other creators' viral videos, with transcripts and an analysis of each opening line, lets the user turn a video that worked into a new script. US$9.90 a month or US$60 a year per brand. The user still publishes the posts.

The founder went where his buyers were. He stopped posting on X, where other founders are, and sold through short-form video on Instagram and TikTok, at the lowest price he could charge, in many countries and languages at once. Stripe data shows revenue of US$289 in June 2026 and US$13,041 in September 2026.

A web app that writes threads, series of connected posts, for X, Threads, Facebook and LinkedIn with an OpenAI model. The user starts from one of 15 or more templates that carry engagement scores, and the app publishes or schedules the result. One plan at US$9 a month.

The founder, who has millions of followers, turned a post format that was going viral on his own Facebook page into templates and sold the tool for about US$5. It made US$26,522 in about two months, and then revenue fell. No source says which channel brought most customers.

A tool for people who want to grow an audience on X (then Twitter). It started as a search box over a library of viral tweets, then added a scheduler, automatic direct messages, a contact list, and a language model that proposes tweets and threads in the user's own style. A sister product, Taplio, does the same for LinkedIn.

Two founders shipped eleven products in about four months and kept the one that made money. They sold it on the platform it served, gave an audience owner a share of profits instead of a sponsorship fee, and used a language model to make writing faster, not to replace it. Fifteen months after launch, with about US$1 million a year in revenue, they sold to a larger French software company run by a former schoolmate.

A web page where a user picks a use case (blog outline, product description, email, ad text), a tone and a language, types a few words, and gets a short text written by GPT-3. The free plan gives a monthly character limit; paid plans remove it. Rytr sells the output of OpenAI's model with a simpler interface and a much lower price than the other AI writing tools of 2021.

It entered an existing market with a lower price (US$29 a month for unlimited use, later US$9) and a simpler interface, sold the first customers through AppSumo, and put all marketing effort into search engine ranking, an affiliate program and a reward for reviews. It reached about US$1 million a year in revenue in seven months with three people, and a competitor bought it 18 months after launch.

A web tool that writes marketing text. The user describes a product in a few sentences, picks a type of text (Facebook ad, Google ad, headline, value proposition, blog post, or landing page, the single web page that an advertisement links to) and a language, and gets several drafts written by GPT-3, OpenAI's text model. A document editor has a button that continues a blog post, and a page builder produces a landing page with text, design and code. Each generation costs credits, and the plan sets the number of credits per month.

The founder already sold a small template tool for headlines when OpenAI gave GPT-3 to a first group of developers. He asked OpenAI's chief technology officer for access by email in June 2020, received it, and spent five months rebuilding the tool around the model. When that version came out in December 2020 there were few such tools and he had an audience on X from showing his work in public. He says revenue went from US$1,000 to US$20,000 a month by February 2021. He sold in March 2021, when new competitors appeared every week.

Upload or link a recording, such as a podcast episode, a webinar or a Zoom call, and get a transcript with speakers and timestamps. From that transcript the product writes show notes, newsletters, social posts, blog articles and quotes, and cuts captioned clips, with prompts that the customer can edit. Subscriptions are priced by the hours of recordings transcribed and start at US$19 a month.

Two podcast hosts had the show notes problem themselves and already knew many creators. A lifetime deal on AppSumo brought about 10,000 users and about US$350,000 in the first months, and paid creators and affiliates brought subscribers after that. Three founders with different skills worked for equity, so the company needed no investors.

A web app for LinkedIn posts. It stores what a member knows and how the member writes, suggests topics from posts that do well, writes drafts with the member in a chat, makes 20 images a month, and schedules and publishes posts to a connected LinkedIn account, with statistics and weekly group calls. A Chrome extension saves ideas from other websites.

Three of the four co-founders had LinkedIn audiences, together more than 480,000 followers, made of the people Kleo sells to, and the free extension had already reached tens of thousands of users. When LinkedIn stopped the extension, they sold a rebuilt paid version to that audience first, in limited groups of seats, before any public launch.

An app for Shopify stores that sends marketing messages on WhatsApp and answers shoppers with an AI assistant trained on the store's catalog: reminders for abandoned carts, campaigns to subscribers, product advice in 96 languages. The store pays a monthly plan plus a charge for the WhatsApp conversations.

After a first product of their own that nobody bought, the founders copied a kind of Shopify app that already earned money, and sold it in France, where few competitors sold it. They found customers only by cold outreach, with tools that cost about US$380 a month. By their account they sold the company seven months after the App Store launch, when sales outside France became hard.

A web app and a Chrome extension that write LinkedIn posts. The member picks an industry, a niche and a type of topic, or gives an idea or a voice note, and the AI writes a draft in the member's style; the member edits it and posts it. By 2026 it also showed the best posts of top creators, found trending topics on Reddit, X, Google, Bing and Perplexity, and planned posts in a calendar. It never posted on its own.

The founder had already built one of the largest audiences on LinkedIn by posting about AI every day, so the product had buyers on the day it launched. It sold one plan at about US$60 a month, as a US$2-a-day ghostwriter against US$2,000 to US$3,000 for a human one, and his employees grew their own accounts with it and sold it for a commission.

A web app with more than 150 small writing tools built on OpenAI's GPT-3: business ideas from a 10-second quiz, blog posts, Facebook and Google ads, emails, social media posts, even poems. The user fills a short form and gets the text back in seconds. It sold mostly as a US$59 lifetime deal on AppSumo, next to monthly plans from US$19.

It arrived in December 2020, when GPT-3 access still came through a waitlist and only a few competitors existed, and it was priced at about 80% of their prices on purpose. A lifetime deal on AppSumo put it in front of buyers who try unknown software, and a Facebook Group and an email list kept those buyers coming back.

An AI writer for an online shop's automated marketing emails. Connected to Klaviyo or another email platform, it writes a different subject line, headline and text for every recipient from the products that person looked at or left in the cart, in the shop's tone, in more than 40 languages, and measures the result against the shop's old email.

Online shops send the same abandoned-cart and viewed-product email to every customer, because writing more versions takes people. A rented language model made one unique email per recipient cheap. Alvas sold this first through a Danish email marketing agency that set it up for its clients, and showed the gains with tests against the shops' old emails.

Upload a podcast episode and get the transcript, show notes, timestamps, a newsletter, social posts, a blog article, short video clips and quote images. The podcaster pays a monthly subscription priced by minutes of audio processed. Media companies and agencies pay custom contracts.

It was built in one week, right after the ChatGPT API appeared, by a podcaster who hated writing his own show notes. Reddit, cold email and a second place on Product Hunt took it to US$10,000 a month in five months. Then the first wave of AI curiosity ended, churn stayed high, and revenue has been flat at about €16,000 a month since 2024.

A web app that writes marketing text with OpenAI's GPT-3. The customer picks one of more than 40 templates, such as an ad, an article, a blog outline, an email or a product description, types a few details, and gets a draft in seconds, in more than 100 languages. A second tool, the Genius Editor, continues a text in the author's writing style. Plans sell a monthly number of words, from 40,000 words for US$19 a month.

It launched in March 2022, eight months before OpenAI released ChatGPT, and sold GPT-3 text through fixed templates for a monthly fee. A third-party report gives US$14,000 of monthly recurring revenue at its best and US$9,500 by May 2025. In 2026 the founder's own profile listed it at US$4,000, beside his much larger AutoShorts.ai.

A web editor that turns a topic, a text, a web page or a YouTube video into a carousel post with several slides for LinkedIn, Instagram or TikTok. The AI writes the slides; the editor sizes the text and keeps the layout fixed, so a person who is not a designer gets a usable post in minutes. It also exports video and PowerPoint.

By the founder's account it was the first carousel maker with an AI writer, at a time when carousel posts were popular on LinkedIn, and it was built in ten days in public, so the launch had an audience. The launch coverage gave the domain backlinks, and search traffic became the largest source of users. Few design choices made it fast for people who are not designers.