BigLeaf
Read huge JSON and JSONL files locally on your Mac
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This is 1 of 44 launches in json tools and utilities — see how it stacks up on momentum and crowding →
213 other launches read as similar to this one →
Details
- External ID
- 1276343
- Source
- PH
- Company
- —
- Product
- BigLeaf
- Website domain
- producthunt.com
- Launched
- Oct. 12, 2026
- Cohort
- —
- Upvotes
- 1
- Upvotes percentile
- 0.33
- Tags
- Mac, Productivity, Developer Tools
Description
Open large JSON, JSONL, and NDJSON files without loading the whole file into RAM. Browse records in a two-pane view, expand nested data, search and filter matches, jump to a record, and copy values or key paths. A 21.5GB JSONL used about 69MB of RAM in an Apple Silicon benchmark. Read-only; your files stay on your Mac. Free at any file size, with optional tips only. Requires macOS 14+.
Enrichment
- Niche
- json tools and utilities
- Vertical
- Horizontal
- Function
- Dev tools
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Commercial product
- Normalized one-liner
- local json and jsonl file viewer for macos
- Manually corrected
- False
Could you build this?
Partial A basic JSON viewer is easy, but parsing and browsing 20GB+ JSON/JSONL files with only ~69MB RAM requires memory-mapped I/O, byte-offset index generation, and custom streaming parsers in native code.
What it would actually take: This requires a native macOS app built with Swift or Rust utilizing `mmap` to memory-map the file descriptor without loading it into RAM. The core difficulty is implementing a streaming byte-offset indexer (such as SIMD-accelerated line/brace detection) to support instant random access and two-pane scrolling across multi-gigabyte structures without OOM crashes. This demands low-level systems programming and systems memory optimization skills.
Competitors
Other products that read as similar to this one — 213 launches clear the similarity bar, closest 8 shown.
Attention rank: #103 of 214 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 325 days after the earliest competitor.
- JSONaire · ph · 2026-09-19 · 7 upvotes · similarity 0.69
- GigaJSON · ph · 2026-10-13 · 1 upvotes · similarity 0.65
- Parsekit — Free JSON Tools for Developer · ph · 2026-09-29 · 1 upvotes · similarity 0.48
- CSV & JSON Developer Tools · ph · 2026-09-29 · 1 upvotes · similarity 0.47
- Mammoth CSV - spreadsheet for huge files · ph · 2026-10-06 · 1 upvotes · similarity 0.47
- bote · hn · 2026-06-18 · 5 upvotes · similarity 0.47
- motherload · github · 2026-10-06 · 10 upvotes · similarity 0.47
- jsoncsvonline · ph · 2026-09-10 · 1 upvotes · similarity 0.46
Other launches for this product
- No other launches for this product.