YC Winter 2007 (W07) companies

Auctomatic builds a management platform for individual sellers on marketplaces such as eBay, Amazon, and Overstock. It handles listing, sales tracking, and performance analytics in one place, replacing the manual work sellers do across multiple marketplace dashboards. The analytics layer helps sellers tune their pricing and listing strategies to improve returns.

Buxfer builds a personal finance platform for individuals who want a unified view of their spending, saving, and investing. It aggregates banking, investment, and retirement accounts from more than 20,000 institutions across 70-plus countries, replacing the manual work of reconciling accounts across multiple apps or spreadsheets. Users set category budgets, receive real-time overspending alerts, and run forecasts against scheduled expenses to plan ahead.

Heysan built a free mobile messaging service that connected phones and computers, bridging SMS with instant messaging for everyday consumers. The service grew into a broader mobile community platform. Good Technology acquired Heysan in May 2009.

Octopart builds a search engine for electronic components, serving hardware engineers who need to find, compare, and evaluate parts during the design process. It aggregates pricing, availability, technical specifications, and reference designs across millions of components into a single, queryable index. The product replaces manual searches across distributor websites and unwieldy spreadsheets that slow down component selection and procurement decisions.

Socialmoth runs an anonymous posting community where members share thoughts, gossip, and secrets, with a feed that surfaces posts from friends alongside the broader community. A companion product, Disenchat, extends the concept to workplaces: employees post anonymously about their employer, organization membership is verified by work email address, and outsiders can see that a forum exists and how active it is but cannot read the posts. Both products replace named social sharing with identity-free expression.

Tsumobi builds a runtime language layer on top of J2ME that lets developers deploy and update mobile applications without requiring users to reinstall anything. Consumer-facing mobile apps historically forced painful manual installs and left users stranded on outdated versions once shipped. Tsumobi replaces that cycle by serving apps via URL, so any update the developer pushes is picked up automatically the next time a user visits a link on a Tsumobi-enabled phone.

Twitch operates a live video platform where gamers broadcast, watch, and discuss gameplay in real time. The platform serves casual players, professional competitors, tournament organizers, developers, and gaming media, replacing passive spectating with interactive, chat-driven viewing. It is the dominant distribution layer for live and on-demand gaming video.

View3 builds active clad-alignment fusion splicers for fiber optic installation and maintenance work. Its splicers use high-magnification fiber imaging to align and fuse optical fibers, replacing manual or lower-precision splicing equipment. The target customer is anyone running fiber infrastructure who needs reliable, accurate fiber joins.

Virtualmin builds an open-source web hosting control panel for Linux, serving developers, IT teams, agencies, and hosting providers who manage their own servers. It consolidates website, mail, DNS, database, SSL, backup, WordPress, and container management into a single interface, replacing a fragmented mix of command-line work and competing panels like Plesk. A free GPL edition handles core hosting operations; Virtualmin Pro adds WordPress and Podman container tooling, a CLI, and a remote API for automation at scale.

Weebly builds a website and online store builder for entrepreneurs and small businesses, letting them create, launch, and grow a web presence without writing code. It replaces the need for a web designer or developer by handling site design, e-commerce, and marketing tools in one place. Now part of Square, it connects online store management directly to in-person payment processing.

Whitenoise builds a vertical social network for the music industry, connecting bands, agents, publicists, and venues on a single platform. Bands plan and route tours using a map-based venue search, while venues browse local artists, sample their work, and contact agents directly to book shows. The product replaces the informal, fragmented outreach that currently links these parties.

WriteWith builds a web-based collaborative writing tool for groups working through drafting, editing, and publishing documents together. Writers start a document from scratch or by uploading an existing file, then invite contributors by email, assign editing tasks, leave inline comments, and track changes through full version control. The tool replaces back-and-forth email chains and manual version management for teams that need to produce a finished document collectively.

Zenter built a browser-based presentation tool that gave users PowerPoint-style slide editing alongside direct web content integration, including images pulled from Google Images. Public slideshows were added to a shared library where other users could remix or embed them. Google acquired Zenter's assets and team in June 2007 to accelerate the presentation features of Google Docs and Spreadsheets.