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10 By 10 logo

10 By 10

YCombinator

10by10 is a unique marketplace in the recruiting agency industry for…

10by10 is a marketplace to instantly match qualified candidates with companies by pooling candidates across recruitment agencies. Check out the testimonials on our website (www.10by10.io).

B2BSan FranciscoArtificial IntelligenceMarketplaceRecruiting

1000Memories

YCombinator

Memorial sites.

1000memories is the new shoebox for your old photos. 1000Memories allows people to organize, share, and discover old photos and memories and set up family trees.

ConsumerSan FranciscoCommunity
100x logo

100x

YCombinator

Create, Share, and Monetize AI Agents

No description available.

B2BBengaluru, IndiaArtificial IntelligenceAIAI Assistant
1849 bio logo

1849 bio

YCombinator

Engineering microbes for miners to unlock billions in trapped metal

1849 bio designs microbes enabling cheap metal extraction allowing miners to unlock value from low quality copper and gold ores. Surprisingly, the mining industry is one of the largest scale users of biotech in the world with biomining processes accounting for ~1% of global copper production. Biomining is ultra-low cost, running around ~$1/ton of ore vs ~$7/ton for conventional processes. Unfortunately, while biomining is cheap, it can’t be applied to over 80% of copper ores, leaving vast resources without profitable extraction methods. An estimated ~$800B of copper sit today in waste materials and stockpiles with negative unit economics. While a great deal of effort has been spent on optimizing microbial metal extraction processes, very little effort has been spent on optimizing the microbes themselves. To change that, we’re creating new biotech tools and platforms applied directly to the types of biology most relevant to miners. This enables us to develop new microbes and tackle some of the most difficult problems in biomining, unlocking billions in value from unprofitable resources while being more environmentally friendly than conventional processes. We’re world class microbial engineers. We met while doing our PhDs in synthetic biology, where we spent our time applying and developing the most advanced bioengineering technologies to engineer living cells. 

IndustrialsSan FranciscoHard TechSynthetic BiologyBiotechClimateMining
21st logo

21st

YCombinator

Infrastructure and UI building blocks for the agentic internet

21st.dev is the largest React component registry for AI applications, used by 2M developers (370K MAU). We provide the building blocks to create AI agents and agent-powered apps: UI components, agent templates, and an SDK with built-in UI, tools, memory, observability, and managed infrastructure.

San FranciscoWinter 2026ActiveSan Francisco
83 Sciences logo

83 Sciences

YCombinator

AI-native materials discovery powered by unpublished experimental data

83 Sciences uses AI to mine discarded experimental data and drive scientific breakthroughs. Working alongside labs, we discover the materials that will power the new Industrial Revolution.

San FranciscoSummer 2026ActiveHard TechAdvanced MaterialsAISan Francisco

99dresses

YCombinator

We're creating every women's fantasy by combining the unwanted…

99dresses allows women all across the U.S. to buy, sell & trade fashion with thousands of shopaholics. Nikki Durkin, the founder of 99dresses, was sick of spending so much money on new clothes only to get bored with them a week later and rarely ever wear them again. She started 99dresses in her home country of Australia as a way for thousands of Aussie girls to conveniently trade fashion with each other online. Now based in NYC and working with a fantastic team (Marcin, Chandra, Oguz & Clare), she is bringing 99dresses to women across the USA. Get the iOS app: http://bit.ly/1fWeoRG

ConsumerNew York City, NYWomen's HealthFashion
Abbot logo

Abbot

YCombinator

Your Customer Success Co-Pilot

Abbot helps customer-facing teams work with their customers in Slack. Abbot watches activity to make sure that customers get replies quickly. Once Abbot joins a room, it summarizes conversations, tags relevant topics, and even suggests next steps. Abbot's Insights make it easy to see your team's responsiveness at a glance. Want to automate common tasks? Abbot's built-in Skills functionality (think: small bits of code we run for you) can be triggered by customer topics, on a schedule, in response to external webhooks, or directly from chat.

B2BSan FranciscoDeveloper ToolsSaaSCustomer Success
Abel Police logo

Abel Police

YCombinator

Automating police paperwork

Abel takes police body camera footage and turns it into completed police reports. Currently American patrol officers spend one third of their shift writing reports - turning that to zero would increase the effective police force by 50%, radically changing US cities.

GovernmentSan Francisco
Abhi logo

Abhi

YCombinator

Abhi is Pakistan's 1st financial wellness platform focusing on…

An early wage access platform allowing salaried employees to draw down a percentage of their accrued salary before the next payroll cycle. Helping employees to avoid late payment fee on bills, access emergency cash and substitute expensive debt. We work on a B2B2C model allowing companies to extend the product as a benefits program to their employee base.

FintechPakistanFintech
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