The Open Stock — Free Stock Market Analysis Platform

Live app: https://theopenstock.com

The Open Stock is a free, open source stock market application for individual long-term investors. Search any ticker, study interactive charts and technical indicators, review financials and analyst forecasts, scan sectors and heatmaps, follow economic and earnings calendars, and optionally use AI (local Ollama, your own API keys, or hosted plans) for predictions and daily stock ideas.

Built with Next.js, TypeScript, and Tailwind CSS. Self-hostable on Vercel.

What you get

Area	Features
Charts & quotes	Live prices, historical charts, key metrics, 52-week range
Technical analysis	RSI, MACD, SMA/EMA, Bollinger Bands, sentiment labels
Fundamentals	Income statement, balance sheet, cash flow, valuation metrics
Forecasts	Analyst price targets and rating breakdowns
Market tools	Sector hub, stock/ETF/crypto heatmaps, asset screener with presets
Calendars	Economic events, earnings, dividends, IPOs
Sentiment	CNN Fear & Greed Index, world markets overview
AI (optional)	Per-symbol AI prediction, daily stock-of-the-day buy/sell ideas, local Ollama

Why this stock app?

Most stock tools are expensive, ad-heavy, or locked behind paywalls. The Open Stock keeps core market data and charts free, with optional paid tiers for ads-free use and AI:

• Real-time stock quotes and market data
• Interactive charts with technical indicators (SMA, EMA, RSI, MACD, Bollinger Bands)
• Financial statements: income, balance sheet, cash flow
• Analyst forecasts and price targets
• Seasonal performance heatmaps
• Economic calendar with country flags and day-grouped events
• Sector performance overview
• World markets at a glance
• Fear & Greed Index
• Stock screener with built-in and custom presets
• AI stock-of-the-day (buy + sell) and symbol-level AI predictions
• Dark mode and mobile-friendly layout

No paywall for core features. No forced tracking. Run it yourself or use theopenstock.com.

Screenshots

Tech stack

Layer	Technology
Framework	Next.js 15 (App Router)
Language	TypeScript
Runtime	Bun (or Node.js 18+)
Styling	Tailwind CSS
Auth	Appwrite
Database	Appwrite
Market Data	Yahoo Finance, Finnhub, FairEconomy
Deployment	Vercel
Testing	Vitest, Playwright

Getting started

Prerequisites

• Bun 1.0+ (or Node.js 18+)
• Appwrite account and project (for auth)

Installation

git clone https://github.com/Ditectrev/Open-Source-Stock-Application.git
cd Open-Source-Stock-Application

bun install

cp .env.example .env.local
# Edit .env.local — set NEXT_PUBLIC_SITE_URL for correct SEO canonical URLs

bun dev

Open http://localhost:3000.

Local Ollama from a deployed site

The Local AI tier uses Ollama at http://localhost:11434. When you run this app locally, the Next.js server can call Ollama directly. When you open a deployed URL, the browser must call Ollama on the user's machine, so Ollama must allow that site origin.

Install Ollama from webinstall.dev/ollama. Set OLLAMA_ORIGINS to your site origin (for production, https://theopenstock.com), then start Ollama with ollama serve:

OLLAMA_ORIGINS="https://theopenstock.com" ollama serve

# macOS Ollama desktop app
launchctl setenv OLLAMA_ORIGINS "https://theopenstock.com"
# Fully quit and restart Ollama after setting this.

# Linux systemd service
sudo systemctl edit ollama
# Add:
# [Service]
# Environment="OLLAMA_ORIGINS=https://theopenstock.com"
sudo systemctl daemon-reload
sudo systemctl restart ollama

# Windows PowerShell
setx OLLAMA_ORIGINS "https://theopenstock.com"
# Restart Ollama after setting this.

# Docker
docker run -e OLLAMA_ORIGINS="https://theopenstock.com" -p 11434:11434 ollama/ollama

Use the exact origin from your browser address bar (scheme + host, no trailing slash).

The app asks Ollama for the locally installed model list and uses the most recently modified model. If no models are installed, run e.g. ollama pull llama3.2.

If ollama serve shows 127.0.0.1:11434: bind: address already in use, Ollama is already running. Quit the existing process or see ollama/ollama#707.

Environment variables

Required

Variable	Description
NEXT_PUBLIC_APPWRITE_ENDPOINT	Appwrite API endpoint
NEXT_PUBLIC_APPWRITE_PROJECT_ID	Appwrite project ID
APPWRITE_API_KEY	Appwrite server-side API key
APPWRITE_DATABASE_ID	Appwrite DB for app data
APPWRITE_COLLECTION_ID_AI_KEYS	Appwrite collection for keys
APPWRITE_COLLECTION_ID_SUBSCRIPTIONS	Appwrite collection for subscriptions

Also required for trial features: APPWRITE_COLLECTION_ID_TRIAL_SESSIONS.

SEO & analytics (recommended for production)

Variable	Description
NEXT_PUBLIC_SITE_URL	Canonical site URL for sitemap, Open Graph, and JSON-LD (e.g. https://theopenstock.com)
NEXT_PUBLIC_GTM_ID	Google Tag Manager container ID (optional)

Optional

Variable	Description	Default
FINNHUB_API_KEY	Finnhub API key for higher-quality live quotes/search/candles	unset
FINNHUB_BASE_URL	Finnhub API base URL	https://finnhub.io/api/v1
YAHOO_FINANCE_API_URL	Yahoo Finance API base URL	https://query1.finance.yahoo.com
CACHE_TTL_SECONDS	Cache TTL in seconds	300
RATE_LIMIT_MAX_REQUESTS	Max API requests per window	100
RATE_LIMIT_WINDOW_SECONDS	Rate limit window in seconds	60
LOG_LEVEL	Logging level	info
DEV_OVERRIDE_PRICING_TIER	Temporary non-prod tier override (FREE,ADS_FREE,LOCAL,BYOK,HOSTED_AI)	unset
DEV_OVERRIDE_PRICING_TIER_USER_IDS	Optional comma-separated user IDs for scoped override	unset
STRIPE_SECRET_KEY	Stripe secret API key (sk_*)	unset
STRIPE_WEBHOOK_SECRET	Stripe webhook signing secret (whsec_*)	unset
STRIPE_PRICE_ADS_FREE	Stripe recurring price id for Ads-free tier	unset
STRIPE_PRICE_LOCAL	Stripe recurring price id for Local tier	unset
STRIPE_PRICE_BYOK	Stripe recurring price id for BYOK tier	unset
STRIPE_PRICE_HOSTED_AI	Stripe recurring price id for Hosted AI tier	unset

See .env.example for the full list.

Appwrite AI keys database setup

bun run setup:appwrite:ai-keys
bun run setup:appwrite:subscriptions

Project structure

├── app/            # Next.js App Router pages, metadata, sitemap, robots
├── components/     # React components
├── lib/            # Utilities, SEO helpers, caching
├── services/       # API service layer
├── types/          # TypeScript types
├── e2e/            # Playwright end-to-end tests
└── public/         # Static assets

Features in detail

Stock analysis

Search any symbol (e.g. AAPL, MSFT) for overview, financials, technicals, forecasts, and seasonals. URL format: /?symbol=TICKER.

Economic calendar

Live economic events grouped by day with country flags and importance filters (FairEconomy / ForexFactory feed).

Technical indicators

SMA, EMA, RSI, MACD, and Bollinger Bands on interactive price charts.

Sector performance & heatmaps

Sector returns and visual heatmaps for stocks, ETFs, and crypto.

Stock screener

Preset screens (growth, value, momentum, dividends) plus custom filters.

AI features

• AI prediction on symbol pages (buy / sell / hold stance with context bullets)
• Stock of the day — daily AI buy and sell ideas validated against market data
• Local AI via Ollama on your machine

Scripts

bun dev              # Development server
bun run build        # Production build
bun start            # Production server
bun run lint         # ESLint
bun run format       # Prettier
bun run test         # Unit tests (Vitest)
bun run test:e2e     # E2E tests (Playwright)

SEO

Production builds expose:

• Page titles and meta descriptions (per route and per /?symbol= ticker)
• Open Graph and Twitter Card tags
• robots.txt and sitemap.xml
• JSON-LD (WebSite, Organization, WebApplication)

Set NEXT_PUBLIC_SITE_URL=https://theopenstock.com on Vercel so canonical URLs and the sitemap match your live domain.

For GitHub Actions → Vercel (.github/workflows/deploy.yml), add the same value as a repository variable NEXT_PUBLIC_SITE_URL so the deploy job can sync it to Vercel (optional for Preview if you prefer VERCEL_URL at build time—leave the variable empty for that environment).

Naming: This product is The Open Stock at theopenstock.com. It is not affiliated with other projects named OpenStock. Meta keywords and the default description include phrases such as OpenStock alternative so people comparing open-source stock tools can find this repo—always use honest wording on landing pages and docs.

Contributing

Contributions are welcome. Please open an issue first to discuss what you'd like to change.

Keywords

The Open Stock, free stock app, stock market dashboard, stock charts, stock screener, technical analysis, RSI MACD Bollinger Bands, economic calendar, earnings calendar, sector heatmap, Fear and Greed Index, analyst forecasts, open source stock platform, AI stock prediction, Ollama investing, long term investing, self-hosted stock app, Next.js finance app, OpenStock alternative, OpenStock alternative free, openstock, free open source stock tracker, open source stock market app like OpenStock

License

Private - All rights reserved