CAPABILITIES & METHODS · 13 OCTOBER 2026
What works here.
What comes next.
ArcToolkit is an independent browser corpus workspace. Its available tools, methods and current limits are listed below.
Open ArcToolkit →Feature coverage
| Research workflow | ArcToolkit implementation | Scope |
|---|---|---|
| Concordance, KWIC and dispersion | Words, phrases, wildcards; simple regex; token positions; CSV/JSON exports; sorting and subcorpus filters | Operational, browser scale. Up to 5,000 retained result rows. |
| Corpus Query Language | Sequential [word="…"], [lemma="…"] and [tag="…"] tests | Subset only. No full CQL quantifiers, structures, Boolean expressions or regex groups. |
| Word lists, n-grams and clouds | Surface frequencies, supplied lemmas/tags, 2–5-grams, document frequency and visual cloud | Operational. English stopword list is small and explicit. |
| Collocations and grammatical word profiles | Window associations; separate dependency-based word profiles from CoNLL-U | Plain text is not automatically tagged. Profiles use imported HEAD/DEPREL/LEMMA/UPOS. |
| Grammatical profile comparison / word comparison | Side-by-side window collocation counts and score differences | Partial analogue; grammatical profile comparison and bilingual sketches are not implemented. |
| Thesaurus | Cosine similarity over local context counts | Limited to 400 frequent candidates. Related contexts do not establish synonymy. |
| Keyword and term extraction | Target/reference log likelihood and smoothed log₂ ratios; n-gram term candidates | Term candidates require review. No complete language-specific term grammar. |
| Parallel concordance | Two-column aligned TSV corpus and source-side search | Operational for manually aligned pairs. No automatic alignment, translation or TMX/XLIFF ingestion. |
| Bilingual term extraction | Unigram source–target co-occurrence candidates and Dice scores | Experimental candidate generation. Not full bilingual terminology extraction or full multilingual terminology extraction. |
| Trends, timeline and text types | Per-year and per-category normalized query frequencies; charts | Operational with user metadata. No automated neologism discovery or significance models. |
| Word sense induction | Experimental context clusters from three seed examples and lexical overlap | Not trained word-sense models or semantic disambiguation. |
| Dictionary examples / a trained example-ranking model | Length-ranked example finder | No a trained example-ranking model scoring model, dictionary editor or TickBox Lexicography. |
| Corpus building and subcorpora | Local files, pasted text, annotations, aligned TSV, metadata and file selection | No automated web crawling or hosted corpus compilation. |
| Reader, cleaner, merger and text conversion | File reading, whitespace normalization, optional URL/digit/punctuation removal and extracted TXT exports | Source data stays unchanged. Text output does not preserve PDF/DOCX formatting. |
| Downloads, history and favorites | TXT, CSV, JSON, local workspace backups; saved views and optional browser remembering | Local only. No shared corpus links, team workspaces or institutional SSO. |
| Ready-made corpora and multilingual annotation | Illustrative sample data and imported annotations | No licensed reference-corpus library or automatic multilingual POS/lemma/dependency models. |
| Hosted APIs, large corpora, crawling, team accounts and CAT integration | Not available in this static browser release | Require separate server infrastructure, resources and integration work. No release date is promised. |
Data and performance
All corpus processing stays in your browser. Analyses run in a dedicated worker and time out after 20 seconds rather than blocking the page indefinitely. Limit: 50 files, 2 million characters and 200,000 tokens per target or reference corpus; 500,000 characters and 10 MB per file; 200 pages per PDF; 10,000 aligned rows.
Corpus backups contain your text. Sharing or downloading a file is your own choice. Browser storage may be cleared by the device; keep an exported backup. PDF and DOCX readers load from this site. Scanned PDFs need OCR before import. No offline PWA is enabled.